Laughlin Air Force Base, Texas

Undergraduate flight training is the primary mission of this Air Force Base near the town of Del Rio and the US/Mexican border. It has a 4,100-acre main base, and a 402-acre auxiliary airfield near Spofford, 22 miles to the southeast. Laughlin once served as a U2 spyplane base, and has trained around 14,000 Air Force pilots since 1962.