A dog sits under a sign, at Battersea Dogs and Cats Home in London, February 19, 2015. REUTERS/Neil Hall (BRITAIN - Tags: ENTERTAINMENT SOCIETY)

Olympic short track speed skater Apolo Ohno wears dogtag necklaces of the Olympic rings, at the 2014 Nickelodeon Kids' Choice Sports awards in Los Angeles July 17, 2014. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT SPORT SPEED SKATING)

Dog tags hanging from a gun belonging to Captain Sean Ruane, who died in a helicopter accident, are displayed in a hangar before a memorial service at RAF Lakenheath in eastern England January 17, 2014. A U.S. military helicopter crashed on the coast of eastern England, killing all four crew on board on January 7, 2014. REUTERS/Darren Staples (BRITAIN - Tags: MILITARY DISASTER SOCIETY)

Vietnam venteran Jose Gonzalez stands on the sidelines of the New York City Veterans Day parade on 5th Avenue in New York, November 11, 2013. The United States marked Veterans Day on Monday with ceremonies across the nation, from small-town parades honoring those who served in the armed forces to the president marking the day at Arlington National Cemetery. REUTERS/Mike Segar (UNITED STATES - Tags: ANNIVERSARY MILITARY)

"Doggie", a dachshund kidnapped four times amounting to a total of $800 of ransom, is seen with his collar in Mexico City, July 15, 2013. Robbery and kidnapping of breed dogs have quadrupled during the last few years in Mexico, according to animal care and control organizations. Criminal gangs which operate mostly in public parks threaten owners with guns or use dogs in heat to lure their pets and kidnap them. Ransoms for these breed dogs can go up to an estimate of sevenfold the value of the pet. Canine Advocacy Programs suggest that the average cost of having adopted pets spayed or neutered and implanted with an identification chip is around $50. Picture taken July 15, 2013. REUTERS/Edgard Garrido (MEXICO - Tags: SOCIETY ANIMALS)

Linda West, a delegate from Virginia, holds up her father's U.S. Marine dogtags during a speech by U.S. Senator, U.S. Navy veteran and former Democratic presidential nominee John Kerry during the final session of the Democratic National Convention in Charlotte, North Carolina, September 6, 2012. REUTERS/Adrees Latif (UNITED STATES - Tags: ELECTIONS POLITICS)

Miners' individual security badges are seen at Polkowice-Sieroszowice mine, part of KGHM, in Polkowice near Lubin, southern-western Poland in this July 29, 2011 file photo. KGHM's C$3 billion ($2.96 billion) bid for Quadra FNX is widely being viewed as a low-ball offer, and its proposal may well result in a full-blown bidding war for the Canadian miner, which controls one of the world's largest undeveloped copper projects. Picture taken July 29, 2011. REUTERS/Kacper Pempel (POLAND - Tags: BUSINESS ENERGY)

"Above & Beyond", an art exhibit comprised of 58,000 imprinted dog tags, one for every person who died in the Vietnam War, is seen at the National Veterans Art Museum in Chicago July 20, 2011. The museum houses more than 2,000 pieces of art by veterans from World War II to the current conflicts in the Middle East. The museum faces the risk of complete shutdown unless they can raise millions of dollars just to survive. Picture taken July 20, 2011. REUTERS/Jim Young (UNITED STATES - Tags: CONFLICT SOCIETY BUSINESS)

The name tag of Private First Class Zachary Lovejoy hangs from a weapon during a memorial ceremony for him and Captain Daniel Whitten from Charlie Company, 4th Brigade combat team,1-508, 82nd Parachute Infantry Regiment at the Remote Sweeney FOB in Zabul province, southern Afghanistan,
February 8, 2010. CPT Whitten from Grimes, Iowa, and PFC Lovejoy from Albuquerque, New Mexico, were killed by an IED on February 2. when on patrol in southern Afghanistan.
REUTERS/Baz Ratner (AFGHANISTAN

A member of the Commonwealth War Graves Commission displays a dog tag found on the remains of one of three German soldiers by archaeologists in Sancourt near Cambrai in northern France, June 9, 2008. A German soldier, referred to as "Karl H", took part in the battle of Cambrai from September to October 1918 and was a member of the 31st Ertaz infantry regiment. REUTERS/Pascal Rossignol (FRANCE)

A dog tag ID is wedged between panels of the Vietnam Veterans Memorial in Washington, May 27, 2007. This year is the 25th anniversary of the memorial, which has etched into it the names of the 58,249 American servicemen and women who died or were lost during the Vietnam Conflict from 1959-1975. REUTERS/Jonathan Ernst (UNITED STATES)

A photograph and dogtags of 20-year-old U.S. Marine Alexander Arredondo, killed in Najaf, Iraq on August 25, 2004, lie attached to a cross at a symbolic cemetery at "Camp Casey" near the ranch of U.S. President George W. Bush in Crawford, Texas, April 6, 2007. Dozens of crosses representing U.S. troops that have died in Iraq and Afghanistan have been set up by relatives of those killed, part of a protest against the war which began in August 2005 by peace activist Cindy Sheehan, who lost her son Casey in Iraq. REUTERS/Jason Reed (UNITED STATES)

K'Ann Haines of Ventura, California, looks the dog tags of her late son, LCpl. Joshua Michael Haines, with her husband Joseph Yanchak, at a memorial at Camp Pendleton, in southern California February 15, 2007. The Marines of Regimental Combat Team 5 held the memorial for the casualties of their recent 12-month deployment in al-Anbar Province in Iraq. REUTERS/Mark Avery (UNITED STATES)

Dog tags hang from a rifle as Marines of Regimental Combat Team 5 hold a memorial at Camp Pendleton, in southern California February 15, 2007 for the casualties of their recent 12-month deployment in al-Anbar Province in Iraq. REUTERS/Mark Avery (UNITED STATES)

A U.S. soldier holds the dogtag of the late PFC Allen Brenton Jaynes from Texas during a memorial service in the U.S. forces army camp in Baghdad, January 26, 2007. Jaynes was killed last week by a roadside bomb while four of his colleagues were wounded. REUTERS/Erik de Castro (IRAQ)

Dogtags of United States soldiers are hung next to a sign at the United States Marine Corps Landing Memorial on top of Mount Suribachi, Iwo-Jima December 13, 2006, the site of a fierce battle between Japanese and United States forces for control of airfields on the island during World War II. REUTERS/Michael Caronna (JAPAN)

Dogtags and pins placed by United States soldiers decorate a signboard at the United States Marine Corps Landing Memorial on top of Mount Suribachi, Iwo-Jima December 13, 2006, the site of a fierce battle between Japanese and United States forces for control of airfields on the island during World War II. REUTERS/Michael Caronna (JAPAN)

Marines attending a memorial service kneel in prayer before a helmet, boots, dogtags and a bayonet repesenting the fallen marines in Kaneohe Bay, Hawaii January 31, 2006. Four Marines killed in Afghanistan from the 2nd Battalion, 3rd Marine Regiment were honored at the Marine Corp Base Hawaii. REUTERS/Lucy Pemoni

Marines attending a memorial service kneel in prayer before a helmet, boots, dogtags and a bayonet repesenting the fallen marines in Kaneohe Bay, Hawaii January 31, 2006. Four Marines killed in Afghanistan from the 2nd Battalion, 3rd Marine Regiment were honored at the Marine Corp Base Hawaii. REUTERS/Lucy Pemoni

The new 32 cent stamp honoring Prisoners Of War (POW) & those Missing in Action (MIA), introduced by President-Clinton and Postmaster General-Marvin-Runyon May 29 during a Memorial Day ceremony on the White House's South Lawn. Stamp reads "POW & MIA" "NEVER FORGOTTEN," inscribed on a pair of dogtags