He had been in Afghanistan for about a month and was on duty as a machine gunner when the grenade hit. He sustained shrapnel injuries to his leg, temporal bone of the skull and his neck, according to reports.
Waller was airlifted to the Ramstein Air Base in Germany for emergency treatment, and then on to Bethesda Naval Medical Center in Maryland, where his condition is listed as serious but stable.
Cody and his twin brother Justin graduated from Amador Valley High School last June and both enlisted in the Marines at that time. Justin Waller is serving with a Marine unit in Southern California.