2 pilots killed in Marine helicopter crash in Arizona

YUMA, Ariz. (AP) — Two Marine pilots have died in a helicopter crash during a training mission in southwestern Arizona, U.S. Marine Corps officials said Sunday.The AH-1Z Viper crashed Saturday night while the pilots were conducting a training mission as part of a weapons and tactical instructor course, according to the Marine Corps. The cause of the crash is under investigation.Capt. Gabriel Adibe, a Marine Corps spokesman, said the helicopter crashed on the vast Marine Corps Air Station Y