(AP) -- SAN DIEGO (AP) -- The Marine Corps has released the names of the seven Marines killed in the deadliest aviation training accident in years.

The dead were listed Friday as Maj. Thomas A. Budrejko, 37, of Montville, Conn.; Capt. Michael M. Quin, 28, of Purcellville, Va.; Capt. Benjamin N. Cerniglia, 31, of Montgomery, Ala.; Sgt. Justin A. Everett, 33, of Clovis, Calif.; Lance Cpl. Corey A. Little, 25, of Marietta, Ga; Lance Cpl. Nickoulas H. Elliott, 21, of Spokane, Wash. and Capt. Nathan W. Anderson, 32, of Amarillo, Texas.

Anderson was from the Marine Corps Air Station Yuma in Arizona and the others were from Pendleton, the West Coast's largest base.

It could take weeks to determine what caused two helicopters, an AH-1W Cobra and a UH-1 Huey, to crash on Wednesday.

(Copyright ©2012 by The Associated Press. All Rights Reserved.)