The U.S. Marines whose military helicopter crashed in the Chocolate Mountains in eastern Imperial County Thursday were part of a unit assigned to Camp Pendleton in San Diego, military officials reported late Friday.
Officials also identified those Marines killed and wounded in the crash.
Killed were Capt. Theodore S. Treadwell, 29, of Phoenix, who was the aircraft's pilot; and Staff Sgt. Roderick D. Nesmith, 30, of Cortez, Colo., who was a crew chief.
Two others aboard the UH-1N Huey helicopter were injured. They have been identified as 1st Lt. William E. Malsch, 29, of Allentown, Pa., who was the aircraft's co-pilot; and Cpl. Andrew S. Leyda, 24, of Kent, Ohio, also a crew chief.
Malsch and Leyda were both listed in fair condition at St. Joseph's Medical Center and Hospital in Phoenix as of Friday night.