cresespro-health advancededs superior in these 5 areas dentists check. this is gonna go well, for sure. advance to a healthier stronger, cleaner mouth from day 1. great check up. >>> how wear doing? >> reporter: halfway through the most ambitious face transplant surgery ever attempted doctors have removed the donor's fafa. a warning, some of the footage is graphic. former firefighter pat haddison is lying on the operating table next door, his now-exposed face ready for the transplant. . >> about when we remove the face and start going into the other room it's like starting a whole new operation. >> everybody ready? >> yeah. >> yep. >> reporter: lead surgeon dr. eduardo rodriguez positions the face. he now must quickly get blood circulating to it before the tissue starts to die. it's bee without blood flow for almost three hours. >> untjl the face becomes pink my hehet's racing. >> reporter: it's an intricate blood vessels. then within seconds -- pat's heart is pumping blood into his new face. >> the entire face, the scalp, the ears, everything, is pink.