Deamer began his career in the U.S. Marine Corp's Force Recon. After discharge from the Marines he began his career with the LAPD. While in the LAPD, he has worked a variety of assignments, such as Patrol in the 77th Division, Van Nuys Division, Van Nuys Hype Unit, Pacific Division, Hollywood Division Vice and Hype Unit (which he founded) and now Operations-Central Bureau Special Enforcement Unit (gang unit). While at Hollywood Division, Deamer first gained exposure on the small screen as a main character on the Discovery Channels' show, "Hollywood Cops".