George Krietman

George Krietman is a character in Doom 3. He is a technician in Mars City. He survives the initial Demonic assault because the area he was attending to was incredibly difficult to find, even for residents of the base. He decides not to leave the spot, not just because it was safe, but because it monitors and controls the Hydrocon holders, which became unstable in the assault. Just one bullet hitting the Hydrocon holders would cause a massive explosion. He is found by Doomguy eventually. He tells Doomguy that he must stay to get the hydrocon levels under control, but promises to meet him once he finishes the job. Unfortunately, it is unknown whether Krietman got the Hydrocon under control because it was still unstable as Doomguy was moving through, and since Krietman never came to Doomguy, it can be assumed demons either found him, or he died while attempting to reach the Doomguy.

Trivia
It is possible to kill Krietman and take his PDA, which details a message from a friend named Pat Harvey, who is asking Krietman if he had seen his PDA. It is difficult to kill Krietman and get his PDA because Doomguy automatically lowers his gun when facing friendly humans-One may use grenades that bounce into Krietman, but that would destroy the PDA as well, so the only way to get it is to aim the shotgun near him and fire.