Glenn F. Spears is a retired United States Air Force lieutenant general now working as a business development consultant. He was formerly Commander, Air Forces Southern and 12th Air Force. He was also deputy commander of United States Southern Command, one of nine (now there are eleven) combatant commands in the United States Department of Defense. He also commanded the Special Air Mission, the unit responsible for flying the President of the United States on Air Force One. During his 33 years of service in the Air Force, he commanded at every level, provided force management expertise and flew over 3,400 hours in 16 types of Air Force aircraft.