actually, you're supposed to use a wet towel (preferably with sterile water or saline solution) to make a pouch around the intestines, then place them in a small garbage bag (new & sterile) and tie or tape that to the person before medevac.

I'm not a Dr but I played the Medical Officer onboard the USCGC DRUMMOND 1991-1993: Cape Canaveral, Fl
QMC, USCG (Ret '99 and loving it)