 In the United States Department of Defense, Psychological Operations units exist as the Army's 4th Psychological Operations Group, 8th Psychological Operations Group and Air Force with COMMANDO SOLO units under the Air Force Special Operations Command's 193rd Special Operations Wing.The United States Navy also plans and executes limited PSYOP missions.United States PSYOP units and soldiers of all branches of the military are prohibited by law from conducting PSYOP missions on domestic audiences.