Christopher Lee / Getty Images Europe

Lt. Brad Snyder, blinded in Afghanistan after stepping on an IED, spent his first "Alive Day" winning gold at the 2012 Paralympic Games in London.

One year to the day after Lt. Brad Snyder lost his vision to a bomb explosion in Afghanistan, he swam ferociously across a pool. Then he stood atop a podium at the London Paralympics, wore gold around his neck and beamed to the national anthem, savoring the moment but seeing none of it. 

Exactly eight years after Tammy Duckworth lost her legs to a rocket-propelled grenade in Iraq, she met the Army medic who revived her inside a mangled helicopter. Amid that reunion, she had an extra reason to smile: Six days before, Duckworth had won a seat in the U.S. Congress.

During the otherwise dark anniversaries of their devastating combat injuries, both veterans chose to cherish the warm light of survival on what has come to be known, throughout the military, as “Alive Day.”

Their numbers are growing more slowly though still rising: Seventy American service members were wounded in Afghanistan during December, according to new Department of Defense figures. That made 2012 the third-bloodiest year of that war in terms of the tally of U.S. troops hurt in action — 2,951.

“Choice — that word means a lot here,” said Snyder, 28, a former Navy bomb-disposal expert. “‘Choice’ puts everything on a level playing field. Each of us faces a plethora of daily choices — when to get up, what to eat for breakfast, what to say to your family before leaving for work. You can choose to be positive. Or you can choose to be a victim.

“You can choose to move forward with grace. Or you can choose to succumb to negativity.”

How Snyder capped his initial Alive Day made some people cry, including his mother who watched from poolside. It made thousands more cheer at London’s Olympic Aquatics Centre. Twelve months after stepping on an IED, he dove blindly into water for the 400-meter freestyle Paralympics final. He won by nearly six seconds — an eternity in competitive racing.

Slideshow: Blinded warrior has visions of gold

Lt. Brad Snyder lost his sight in an IED explosion in Afghanistan in 2011. In September, the Navy officer once again represented the U.S., this time at the London 2012 Paralympics.

Launch slideshow

“Every (survivor of severe combat wounds) flirts potentially with a much more dismal outcome,” said Snyder, one of more than 50,000 U.S. troops wounded in Iraq and Afghanistan. “To be in a situation where you can still do something great, that’s the way I look at Alive Day.”

But the concept isn’t an easy mental fit for every disabled veteran, admitted Snyder, who lives in Baltimore and who will remain a Naval officer for a while longer. During a recent public-speaking event, he chatted with former service members and discovered that “some of them just don’t even acknowledge Alive Day exists. Some look at this as a day when they only wear black, mope around and think about how miserable they want to be.”

The notion of trying to transform the anniversary of a nearly-fatal battle injury into an annual day of triumph was hatched before the Vietnam War, said Dr. Sydney Savion, a retired military officer, applied behavioral scientist and author of “Camouflage to Pinstripes: Learning to Thrive in Civilian Culture.” She is based in Texas.

Alive Day, Savion said, is “on some level, mind over matter." But she believes the concept serves as an effective mental-health salve and can be part of a path to lasting recovery.

“One of the most important things a veteran can learn to do in life is to reframe negative events that have happened to them. This is not to deny the close escape from death or the permanent wounds, sanitize them or hide them,” Savion said. “Instead, look at them like creating a piece of art. Michaelangelo once said, ‘I saw the angel in the marble and carved until I set it free.’ Even the ugliest events, when looked at with fresh eyes, (can carry) newfound meaning, opportunities and answers.”

Many veterans try, through reunions, phone calls, emails and letters, to retain the tight camaraderie they formed with their unit buddies. Alive Day, Savion added, offers another way “to rekindle that connection.” 

“If things are going to turn out well for any veteran, one thing (that) is paramount is redefining who one is and repurposing one’s life,” she said. “One must mentally and emotionally surrender the old situation and experiment with new ways of being, doing, (and) thinking.”

Duckworth, a former Army chopper pilot, this week took that advice to Capitol Hill. In her second bid for Congress, she won a seat in the U.S. House of Representatives on Nov. 6, serving the suburbs north of Chicago. She was sworn in Thursday.

Getty Images

Newly elected Congressional freshmen Tammy Duckworth, D-Ill., arrives to pose for a class picture with other new members of the 113th Congress on the steps of the U.S. Capitol on Nov. 15, 2012, in Washington D.C.

The Monday after her election victory — her most recent Alive Day — Duckworth met the man who pulled her back to consciousness after she and her co-pilot managed to land their damaged, smoking Black Hawk helicopter in 2004.

“I don’t remember being in the ER. I just met the flight medic who revived me in the helicopter. We just spent Alive Day together,” Duckworth told NBC News in a recent interview. “He said, ‘You looked up at me. You were completely calm.’ ”

Duckworth often spends her Alive Day with the five men who were aboard the chopper with her in 2004 as they skimmed treetops in Iraq at about 135 miles per hour. The group has sometimes gathered in St. Louis. She sees that anniversary, she said, as a “celebration” — and a moment when she can show appreciation to those who helped save her life.

But Alive Day also provides veterans with a unique bond, she added. After a photo shoot of Congressional freshmen snapped last November, Duckworth met a new lawmaker from California, Paul Cook, who was wounded in Vietnam.

“There’s a subset of us who have seen combat action,” Duckworth said. “That’s the reason I was able to talk to this man. He started talking about walking into a trip wire in Vietnam and wanted to know what hit me, what that was like.’ When you’ve actually not just been deployed, when you’ve both seen combat action, you have this common place.”

Duckworth’s 2013 Alive Day likely will be spent in the House of Representatives. It falls on a Tuesday.

Snyder’s 2013 Alive Day comes on a Saturday. He has resolved to “raise the bar” on the feat he pulled off last Sept. 7. But he knows that will not be easy.

“I want to do something that’s more outstanding or more ridiculous,” Snyder said. “Maybe I’ll climb a mountain or jump out of an aircraft. We’ll see. Certainly, it will be a day about moving forward. I’ll try to make the most of the fact that I’m still here. I’ll enjoy life to its fullest. That’s something I try to do every day — but especially on that day.”

More content from NBCNews.com:

• The enemy within: Soldier suicides outpaced combat deaths in 2012
• One inch: Death in combat hinges on the tiniest of margins
• From war with love: Christmas letters home span centuries but hit same notes
• After firing soldier in 2000, USPS ordered to rehire him — and pay him $2 million
• Same-sex wife of Army officer banned from joining military spouses club
• Military cracks down on alcohol abuse amid age-old bingeing habit 
• Fewer homeless vets 2012, but advocacy group sees 'alarming' trend
• Florida guide uses hunting as rustic therapy for combat veterans

Follow US news from NBCNews.com on Twitter and Facebook

Courtesy Jesse Holder

Jesse Holder, a 173rd Airborne trooper, was wounded in 2007 while serving in Afghanistan by shrapnel from an RPG round.

Four soldiers, four battles — and, between them — four total inches separate the slim expanse between death and life.

One died because his armor plating wasn’t one inch higher. Three survived by that same tiny fraction, left to mull the unanswerable: "Why am I still here?"

In the final days of 2012, the somber tally of American service members wounded in action in Afghanistan surpassed 18,000 while the number of U.S. military men and women killed there eclipsed 2,040, according to the Department of Defense.

As Jesse Holder can attest, many of those 20,000-plus causalities are here — or are gone — based on a cold geometric fact of war: So often, everything comes down to a single inch.

"I got hit in the neck and I thought I was done," said Holder, a 173rd Airborne trooper wounded in 2007 by shrapnel from a rocket-propelled grenade while in Afghanistan. The round detonated just above and to the right of Holder’s head as he rode in the turret of an Army truck, patrolling a steep-walled riverbed.

"I said, out loud, 'Oh, this is it. I’m going to die right here.' Everybody in the truck was thinking the same thing because of all the blood."

He was airlifted to a makeshift hospital where a surgeon removed the metal fragment. The doctor then revealed that if the chunk had entered Holder’s neck "one centimeter to the left," it would have opened an artery. He likely would have bled to death in the truck. Instead, he was back on the line 10 days later. He never lost consciousness.

"After the fire fight," Holder said, "when you're back at your base talking about it, that's when it usually comes out: 'I was inches away.' You'll hear: 'If that glass shield hadn't been there, or if that tree hadn't deflected the bullet, I wouldn't be here now.'

"During combat, you try not to think about it. But I think that's why, when people come back, some have a hard time," added Holder, who recently published a book, "Chutes, Beer, & Bullets," recounting some of those close calls. "I've been good at compartmentalizing it, and not thinking about it. But I lost a friend like that. It was the one inch that killed him."

'It could have been me'
That buddy was Army Spc. Jacob Lowell, 22, a 173rd Airborne trooper who had been in Afghanistan for two weeks when his unit clashed with enemies armed with small arms and grenades on June 2, 2007.

Courtesy Jesse Holder

Jacob Lowell, left, is pictured with a fellow soldier. Lowell was killed in action after a bullet narrowly missed his protective armor.

"All my friends, all at one time, they got wiped out," said Holder, who was not part of that mission. "A lot of our guys didn't make it home. My good friend did die by a narrow margin. The bullet went right above Jacob’s protective armor."

The feeling dubbed "survivor guilt" is a sentiment that Dr. Harry Croft, a San Antonio-based psychiatrist, has often heard expressed during his conversations with more than 7,000 veterans diagnosed with Post Traumatic Stress Disorder.

"I've heard lots of stories, including: 'I was so close, it could have been me.' For some, it's almost like they're saying: 'I feel worse about that than if I would have died.' So they bring home this terrible, burdensome guilt," said Croft.

Recovery can be helped by "learning to reframe that event — not to forget it, but to be able to understand it in a different way," Croft said. 

Therapy can include coaxing veterans to talk about — and eventually accept — the notion that "in the heat of war, a lot of things happen, things you wouldn’t wish on your worst enemy," Croft said.

What's more, combat includes the mathematical equation that thousands of deadly projectiles are whizzing back and forth, up and down; some hit vehicles; some hit trees or rocks or dirt; some hit people, and breeze an inch past human flesh.

'There's a reason I'm here'
Former Army helicopter pilot Joe Baginski has lived more than 40 years since a Vietnam mission during which he nearly was wounded or killed so often in the span of just five minutes, he can't even calculate the number of near misses. But he's put his own survival into healthy — and folksy — perspective: "I must have been smiling just right because I never got a scratch."

In November 1968, Baginski, then 21, hovered his chopper at about 75 feet in thick foliage as other men on board dropped crates of ammunition to U.S. soldiers who were running low on bullets amid a battle with a far larger North Vietnamese force. The helicopter's tail rotor spun inches from branches thick enough to bring down the craft. At the same time, North Vietnamese Army troops fired on the chopper. Bullets pierced the floor. The co-pilot was struck in the arm. A sergeant major was hit in the foot. The instrument panel and numerous gauges — directly in front of Baginksi — were obliterated in the barrage. When the ammo drop was complete, he carefully maneuvered the bird up and through the jungle canopy.

"I have no idea how many rounds we had hit on the inside of that helicopter," Baginski said. "But there had to be at least a dozen that struck that instrument panel and fragments were going anywhere. I don't know how close I came but it had to be pretty close."

For soldiers who beat heavy odds to survive harsh battles, finding deeper meaning in their post-military lives can help them deal with nagging wonders about why they came home when buddies did not, Croft said.

"They decide: 'I guess there's a reason I'm here.' That can be the impetus to move forward with life," Croft said. 

That's a sentiment embraced by John Bennett, who was dropped by a sniper's bullet in Iraq in 2005. The bullet entered his right side, shattered two vertebrae, fractured a third, and cost him his colon, his spleen, half his pancreas and his ability to walk.

"An inch to the left, it would have deflected off my ballistic armored plate and I would have been fine. And an inch to the right, it would have hit my liver and it would have more than likely killed me," said Bennett, a former infantry soldier who lives in Cascade, Mont. 

"In the earlier stages of my recovery it was a daily thought: Half inch left and I wouldn't be in this situation. And I still think about it periodically. But, I don't dwell on it," Bennett said. "I am a firm believer in everything happens for a reason. I don't know what the reason was for me to stay alive and be in this wheelchair, but it was for something. Maybe it was to help with articles like this that help others believe they can move forward, no matter what their situation is. Who knows?"

More content from NBCNews.com:

• From war with love: Christmas letters home span centuries but hit same notes
• After firing soldier in 2000, USPS ordered to rehire him — and pay him $2 million
• Same-sex wife of Army officer banned from joining military spouses club
• Military cracks down on alcohol abuse amid age-old bingeing habit 
• Fewer homeless vets this year, but advocacy group sees 'alarming' trend
• Disability-compensation claims for veterans lag as 'VA backlog' worsens
• Florida guide uses hunting as rustic therapy for combat veterans

Follow US news from NBCNews.com on Twitter and Facebook

Vintage Purple Hearts can fetch hundreds or thousands of dollars on the open market.

The Second World War cost John Henckel his life. The Purple Heart medal he earned for his valiant death comes far cheaper.

For $395, you can buy the award the Army granted posthumously to Henckel, an Army private from Texas, who was killed in action in the Philippines on Jan. 30, 1945.

That’s the price quoted at BayStateMilitaria.com, a combat collectibles site that lists 12 Purple Hearts for sale, ranging from $90 for an unnamed, World War II medal “in nice condition” on up to Henckel’s ribbon.

“A lot of people don’t understand why people collect these. They think it’s a glorification of war. It’s the exact opposite: It’s the celebration of America’s good deeds,” said Scott Kraska, operator of BayStateMilitaria. “It’s memorializing those soldiers who lived and those soldiers who died, celebrating them, learning about them, caring about them through their artifacts – uniforms, diaries, letters and through their medals.”

Following a Supreme Court decision in June that effectively overturned a seven-year-old ban on the buying and selling of Purple Hearts in this country, the oldest U.S. military decorations have bloomed into popular commodities among online souvenir dealers, Internet classified lists, and e-retailers, not to mention at swap meets and vintage stores.

“They can’t keep them on the shelves in an antique shop – on the day they put one out there, it’s gone,” said Capt. Zach Fike, an Army National Guard member based in Burlington, Vt.

But the burgeoning Purple Heart market, in Fike’s view, is nothing more than an American tragedy. He devotes many of his nights and weekends to his passion and to his nonprofit, Purple Hearts Reunited. During the past two years, Fike has used his online detective skills to return seven of the wayward medals – earned by U.S. service members killed or wounded in action – to those soldiers’ families.

For the majority of Purple Heart collectors and dealers, Fike has few kind words.

“It wouldn’t be fair for me to say they’re all bad. But the ones I have encountered, I would consider myself their No. 1 enemy,” Fike said. “They’re making hundreds or thousands of dollars on (each one) these medals. They think it’s cool. It’s a symbol of death. Because of that, it has a lot of market interest and it has a lot of value.”

For Kraska and BayStateMilitaria, based in Massachusetts, Fike has even more scathing review: “He is making a profit off of people who died. I have no respect for that man.”

Watch the most-viewed videos on NBCNews.com 

The two men have had one phone conversation. It did not go well. Fike tried to convince Kraska to at least look for the medal recipients’ families before selling the Purple Hearts; Kraska tried to sway Fike that he sells medals that the recipients’ families have typically sold at garage sales or just tossed in the trash.

Their personal war – fueled by American wars past, during which more than 1.7 million Purple Hearts have been granted by the military – boiled hotter after the Supreme Court struck down the Stolen Valor Act. Signed into law in 2006, the act primarily intended to muzzle people who falsely claimed they had received military medals. As a side consequence, however, the act made it illegal to sell military decorations.

In June, the High Court ruled that the Stolen Valor Act infringed on free speech – even if that speech was fraudulent and uttered by fake war heroes. (On Sept. 13, the U.S. House of Representatives passed a more narrowly focused version of the Stolen Valor Act that will allow criminal prosecutions against individuals who “knowingly” misrepresent their military service records “with the intent to obtain anything of value.”)

Meanwhile, the Purple Heart market remains open for business.

How do those cherished awards typically reach the storerooms of military memorabilia dealers? Medal peddlers often find them at yard sales, flea markets or on sites like Craigslist.

High court strikes down Stolen Valor Act

“They’re not there because somebody pried them out of the hands of an unwilling person,” said Kraska, a military souvenir collector since age 15. He’s now 45. “They’re there because these families have thrown them away or sold them. So these pieces become separated from the family not by accident. They are discarded items.”

The value of a Purple Heart is determined, in part, by whether its recipient was killed in action. In such cases, the military engraves the service member’s name on the back of the medal before giving it to the next of kin. Eventually, if collectors obtain those medals, that scant amount of information allows dealers to research the soldier’s personal history and find out when and how he died.

“These hearts have more of a historical context,” and thus fetch more in sales, Kraska said. “If a Purple Heart is out of its element (and blank on the back), you have no idea who it belonged to; it really has no historical significance and consequently does not have a lot of monetary value.”

In today’s military collectibles market, Purple Hearts doled out during World War II tend to be worth $300 to $400, Kraska said. The prices are fueled by America’s continuing infatuation with “the Greatest Generation” and its seminal conflict, spurred further by popular recent films like “Saving Private Ryan” and by TV miniseries like “Band of Brothers.”

Price points are also driven upward if medals are contained in their original shipping boxes and if they are accompanied by the soldier’s letters home or by government correspondences about the service member’s passing.

“When you see these things, you’re looking into the window of what it was like to be on the other end of the homecoming of World War II, away from the tickertape parades,” Kraska said. “I’ll sometimes have not only the Purple Heart but the original telegram sent to the (deceased’s) mother. I’ve had crumbled telegrams because somebody was in such anguish after receiving that news.”

Courtesy of Zach Fike

Army National Guard Capt. Zach Fike bought Ralph Bingham's 93-year-old Purple Heart on Craigslist then returned it to Bingham's family last Saturday. Fike stands with Barbara MacNevin, the daughter of Private Bingham. The photo was taken at the Bourne, Mass. National Cemetery on Sept. 15. MacNevin holds the flag that was flown over the U.S. Capital in honor of her father. Atop the folded flag is Bingham's Purple Heart.

While Kraska emphasized that he treats his for-sale medals with love, veterans like John Bircher are equally anguished when money is generated – years later – by the blood shed by an American Marine, infantryman, sailor or flier.

“We hate to see these things out there for sale. Anytime I see one at a flea market or a pawn shop, I buy it,” said Bircher, spokesman for the Military Order of the Purple Heart. The group, based in Sprinfield, Va., was formed in 1932 “for the protection and mutual interest of all who have received the decoration.” It is composed exclusively of Purple Heart recipients. Bircher earned his when he took shrapnel in the leg in Vietnam.

Fike, too, owns a Purple Heart. He was wounded Sept. 11, 2010 in Afghanistan when an enemy rocket landed near his bunk and sent a burning chunk of shrapnel into his lower back.

But his fervor to return Purple Hearts to the families of the recipients was kindled, he said, when his own mother gave him another man’s Purple Heart as a Christmas gift shortly before Fike was deployed to Afghanistan. She had purchased the award for $100 at an antique shop. Fike began a quest to find the identity of that soldier and eventually discovered his name, Corrado Piccoli, his fate – killed in France in 1943 – and then tracked down his kin and returned the heirloom.  

He insists that most Purple Hearts that wind up in thrift shops or in online auctions were not purposely surrendered by families nor meant to be sold but were often lost or misplaced, only to be discovered years later by people who had no connection to the medals yet who saw dollar signs. 

“I know I’m out numbered on this - there's hundreds of collectors selling them and buying them compared to one guy who’s on this crusade,” Fike said.

“But if I can just reach one or two of these dealers and convince them to at least try to reunite the medals with the families of the recipients, well, then I’ve done some justice.”