Sheppard Air Force Base is a United States Air Force base located five miles (8 km) north of the central business district of Wichita Falls, in Wichita County, Texas, United States. It is the largest training base and most diversified in Air Education and Training Command. The base is named in honor of Texas Senator John Morris Sheppard, a supporter of military preparations before World War II. The host unit at Sheppard is the 82d Training Wing (82 TRW), which provides specialized technical training and field training for officers, Airmen and civilians of all branches of the military, other DoD agencies and foreign nationals.