Subscribe to Times of San Diego's free daily email newsletter! . The Marines have not been identified yet, pending notification of next of kin.
In total, 13 US service members have been killed in separate aircraft crashes since March 14: Two Navy aviators died when their F/A-18F Super Hornet crashed off Florida, and seven airmen were killed on March 15 when their Air Force HH-60 crashed in western Iraq, near the Syrian border.
President Donald Trump sent his condolences to the families, tweeting that his thoughts and prayers were with the fallen Marines. Last October, a CH-53E helicopter crashed and burned in Okinawa but nobody was injured. It was a warm, clear day. We pray for their families and our great @USMC.
Four crew members were aboard the aircraft.
The Imperial Valley Sheriff's Office says the crew members have been recovered and taken to the coroner's facility.
According to a recent internal study conducted by the Marine Corps, budgeting issues have combined with the advancing age of America's Super Stallion fleet to create an extremely risky situation. "The status of all four [crew members] is presumed dead pending positive identification".
A Marine helicopter has crashed during a Southern California training mission and authorities believe all four crew members were killed.
The CH-53E Super Stallion went down shortly after 2:30 p.m. Tuesday near El Centro, a few miles from the U.S. -Mexico border. Bill Urban. The Harrier came from Marine Medium Tiltrotor Squadron 162, based out of Marine Corps Air Station New River, North Carolina. The names of the Marines were expected to be released on Thursday.