A physician at Stargate Command. Carmichael was on call when Teal'c found himself unable to exit the Foxtrot Alpha Six simulation utilizing a modified virtual reality unit developed by Dr. Bill Lee and his team. He was forced to give the Jaffa adrenaline and emergency stimulants to prevent his heart from stopping. Because of the electronics plugged into the man, a crash cart could not be used.
Carmichael was successful in keeping Teal'c alive just long enough so that he could complete the simulation.
Avatar - Dr. Carmichael lends his expertise in maintaining Teal'c's physical body while his mind is plugged in to an artificial environment that is trying to kill him.