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Gunnery sergeant Christopher Willingham, of Tuscaloosa, Alabama, USA, poses with US Marine dog Lucca, after receiving the PDSA Dickin Medal, awarded for animal bravery, equivalent of the Victoria Cross, at Wellington Barracks in London, Tuesday, April 5, 2016.  The 12-year-old German Shepherd lost her leg on 23 March 2012, in Helmand Province, Afghanistan, when Lucca discovered a 30lb improvised explosive device (IED) and as she searched for additional IEDs, a second device detonated, instantly loosing her front left leg. Lucca completed over 400 separate missions in Iraq and Afghanistan during six years of active service protected the lives of thousands of troops, with her heroic actions recognised by the UK's leading veterinary charity, PDSA, with the highest award any animal in the world can achieve while serving in military conflict. (AP Photo/Frank Augstein)
Gunnery sergeant Christopher Willingham, of Tuscaloosa, Alabama, USA, poses with US Marine dog Lucca, after receiving the PDSA Dickin Medal, awarded for animal bravery, equivalent of the Victoria Cross, at Wellington Barracks in London, Tuesday, April 5, 2016.  The 12-year-old German Shepherd lost her leg on 23 March 2012, in Helmand Province, Afghanistan, when Lucca discovered a 30lb improvised explosive device (IED) and as she searched for additional IEDs, a second device detonated, instantly loosing her front left leg. Lucca completed over 400 separate missions in Iraq and Afghanistan during six years of active service protected the lives of thousands of troops, with her heroic actions recognised by the UK's leading veterinary charity, PDSA, with the highest award any animal in the world can achieve while serving in military conflict. (AP Photo/Frank Augstein)

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    U.S. Marine on his dog: 'I owe her my life'

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U.S. Marine on his dog: 'I owe her my life'

"I owe her my life," says Gunnery Sgt. Chris Willingham. "I'm very fortunate to have served with her." Lucca has been awarded the military's highest honor for animals.

U.S. Marine on his dog: 'I owe her my life'

"I owe her my life," says Gunnery Sgt. Chris Willingham. "I'm very fortunate to have served with her." Lucca has been awarded the military's highest honor for animals.