Bernie Ackerman was a member of the ill-fated Red Team, a medical unit of Stargate Command. Red Team was called away from inoculations on the planet designated "865" to help SG-1 solve a medical mystery, why all the villagers appeared to die in their sleep. Ackerman complained about pulling a double shift while trudging with SG-1 to look for a cave that may lead to some clues.
Ackerman dozed in the cavern, exposing himself to a microscopic parasite that fed on the body's melatonin. This also increased the brain's need for sleep. When Ackerman dosed off again, he would never wake up. The parasite gorged on the melatonin levels in Bernie's brain, creating a ruptured aneurysm and killing Ackerman.
--Aurora 21:30, 25 July 2006 (PDT)