Grey, who grew up in Bakersfield, California, joined the Army in 1998 and quickly advanced from training into the 75th Ranger Regiment, 2nd Battalion spending most of his time there as a Sniper. He spent the rest of his career at Ft. Bragg. Grey deployed four times-two each to Afghanistan and Iraq-before he became 100 percent disabled from an explosion that occurred during a late-night house raid and gun-battle in Baghdad in 2005.