High Quality Content by WIKIPEDIA articles! John Michael Loh (born March 14, 1938, in Washington, D.C.) is a retired four-star general in the United States Air Force who last served as Commander, Air Combat Command from June 1992 to July 1995. His other four-star assignment include being the 24th Vice Chief of Staff of the Air Force from June 1990 – March 1991, Acting Chief of Staff of the Air Force from September 18, 1990 to October 29, 1990, and Commander, Tactical Air Command from March 1991 – June 1992. He retired from the Air Force on July 1, 1995.