Captain Andrus is a board-certified internist, who completed his medical residency at Naval Hospital, Portsmouth, Virginia, and is medical surface warfare qualified. His operational tours include medical officer, 3rd Battalion/4th Marines; staff medical officer 9th Marine Amphibious Brigade/AESF, Operation Frequent Wind; medical officer, USS Truxtun (CGN-35); fleet surgeon, Commander Seventh Fleet; command surgeon, U.S. Naval Forces Central Command, Operation DS/DS; and fleet surgeon, U.S. Pacific Fleet.
