Born in Cambridge, Massachusetts, he graduated from the Boston University College of Business Administration in 1958.
He then attended the Officer Candidate School at Newport, Rhode Island, and was commissioned into the United States Naval Reserve as an ensign on May 1, 1959.
[4] After attending the Naval War College in Newport, Rhode Island and serving a shore assignment in Coronado, California, Reimann became executive officer of the guided missile cruiser Chicago (CG-11).
At NAVSEA, Reimann helped oversee the 1988–89 repair of the guided missile frigate Samuel B. Roberts (FFG-58) by Bath Iron Works in Portland, Maine, after it was nearly sunk by an Iranian mine during Operation Earnest Will.
[3] After retiring from the Navy in January 1993,[3] Reimann went to work for Rumpf Associates International, a defense contractor based in Arlington, Virginia.