 The United States Air Force operates several bases in the state – Sheppard (Wichita Falls), Dyess (Abilene), Goodfellow (San Angelo), Laughlin (Del Rio), and Lackland and Randolph (San Antonio) Ellington Airport, (Houston).The United States Navy operates Naval Air Station Joint Reserve Base Fort Worth (the former Carswell Air Force Base facility) as well as NAS Corpus Christi and NAS Kingsville.Texas (specifically Dallas and Houston) has a large number of defense contractors which creates sizable employment for the state.