prosthetics, life-changing for these men and women that thought they'd never walk again. >> and that was the motivation to create a better solution for the wounded warrior, and that's where it all began. and we felt, can we give them a new face, but not just soft tissue, can we replace the bones? can we replace the bones with the teeth? and can we replace the bones with the teeth and tongue and all face and connect all the nerves? it hadn't been done before we started and now look at where we are. it's a reality. >> and that new reality is changing and saving lives. in 2015, dr. rodriguez, well, he pushed things even further performing the most extensive face transplant ever attempted. patrick was a volunteer fire fighter from mississippi. >> volunteer fireman. >> greatest job in the world. >> sean: you don't even get paid for it. >> well you do what you love. >> sean: in 2001 he ran into a