Thousands of soldiers have been wounded in the wars in Iraq and Afghanistan. Only five have survived quadruple amputee injuries - staff sergeant Travis Mills is one of them. It was just another ordinary day during his third deployment in Afghanistan, when staff sergeant Travis Mills was on patrol with his team and unknowingly set his pack down on the ground detonating a hidden IED. All four limbs had to be amputated. Driven by the desire to be with his wife and baby girl, he says it was a test of endurance, more mentally than anything else.