Since the U.S. Marine Corps is part of the Department of the Navy, it relies on Navy corpsmen and other Naval medical personnel for medical care. U.S. Air Force aerospace medical services technicians have frequently served attached to U.S. Army units in recent conflicts. Though all combat medical personnel are universally referred to as "medic", within different branches of the U.S. military, the skill level, quality of training and scope of work performed by medics varies from branch to branch. As a result of the 2005 BRAC, the U.S. Department of Defense has moved most medical training for all branches of the armed forces to Fort Sam Houston of Joint Base San Antonio. A new Medical Education and Training Campus was constructed and the Air Force's 937th Training Group and Naval Hospital Corps School were relocated to Fort Sam Houston, joining the Army's existing Army Medical Department Center & School. Although each service has some training particular to its branch, the bulk of the course material and instruction is shared between medical personnel of the different services.