U.S.A. (stands for "Under Satan's Authority") is the only studio album by American horrorcore trio Flatlinerz. It was released on September 6, 1994 via Def Jam Recordings. Recording sessions took place at Chung King Studios, Next Level Studios, and Greene St. Recording in New York. Production was handled by Tempest, Rockwilder, Crush, DR Period and Kool Tee, with Kenny Lee and Russell Simmons serving as executive producers. It features guest appearances from Gravemen, Kool Tee, Mayhem, Omen, Rockwilder and the Headless Horsemen. In 2009, Fangoria named it as an iconic horrorcore album.