Lieutenant General William H. Etter is a retired United States Air Force officer who last served as commander of 1st Air Force (Air Force North) and commander of Continental North American Aerospace Defense Command Region, from March 2013 to August 2016. Etter is a command pilot with more than 3,700 military flight hours, primarily in the T-37 Tweet, T-38 Talon, and F-16 Fighting Falcon. Additionally, Etter has more than 11,300 commercial flight hours, primarily in the Boeing 737, 757, and 767.