(This post was updated with breaking news at 9:27 a.m. ET.)
Seven U.S. Marines were killed Wednesday night when two helicopters collided over the Yuma, Ariz., Training Range Complex, according to a statement just emailed to the NPR Newscast Desk by a spokesman for the 3rd Marine Aircraft Wing.
The statement adds that:
"The aircraft, an AH-1W 'Cobra' and an UH-1Y 'Huey,' were conducting routine training operations around 8:00 p.m. Identities of the Marines will be withheld until next of kin have been notified."