just falling, falling backwards. i think my wife took the brunt of the impact. when i turned back around, she was no longer there and nobody was standing up anymore in front of me. so for a couple of seconds i just looked left and right and then looked down and there she was. >> your wife. >> my wife, celeste. i saw her eyes were open and i still at this point, i don't realize that this is a bomb that exploded. i see her eyes open. i know she's alive. and then i start looking around. and there are limbs everywhere and blood. and i look down her body to see if she's okay. and i notice her legs. and that's when it hits you. this is obviously some type of terrorist-related event, whatever you want to call it. and that's when it got real. instinct just takes over. you take your belt off. you put a tourniquet on. dwroel a guy who happened to be running toward me. he gave me his belt.