Yuma Training Range

Chopper collision kills 7 Marines in Arizona

Seven Marines were killed in a collision of two helicopters near Yuma, Ariz., during night training exercises, the Marine Corps said on Thursday. Lt Maureen Dooley with Miramar Air Base in California said the service members with the 3rd Marine Aircraft Wing were based at Camp Pendleton north of San Diego. The crash around 8 pm on Wednesday involve...