Marine killed in Camp Pendleton helicopter crash identified [Updated]
Cook, from Orleans, N.Y., was a veteran of the war in Afghanistan. He enlisted in 2004.
Cook was among six Marines on the UH-1Y (Huey) that crashed in the San Mateo area in the northern reach of the sprawling base. The others were taken to local hospitals.
The cause of the crash remains under investigation.
[Updated, 12:30 p.m., July 7: Three of the injured Marines were treated and released at a local hospital, and two others are listed in good condition, the Marine Corps said.]
-- Tony Perry in San Diego
Photo: Sgt. Trevor Cook during his deployment in Afghanistan. Credit: Marine Corps