You may have noticed in the photo above that the Marine being carried has one bare foot and that the removed boot has been tied to his pant leg.
Well, looks like that boot made it with him on the MEDEVAC bird. I'm sure he was pleased with that. The guys hate losing pieces of gear, and often complain about how all of their clothing (including boots) may be cut off during examinations after MEDEVAC. It's a safety precaution, of course. Additional wounds, such as those from shrapnel, can be unnoticed by a patient who is focused on the pain of a larger, more obvious one.