As chief, he was responsible for ensuring that nearly 460,000 Army National Guard and Air National Guard personnel are accessible, capable and ready to protect the homeland and to provide combat capabilities to the United States Army and the United States Air Force.

Prior to his last assignment, Lengyel served as the 10th vice chief of the National Guard Bureau.

His previous general officer assignments include Senior United States Defense Official; Chief, Office of Military Cooperation; and Defense Attaché, Cairo, United States Central Command, Cairo, Egypt.

Lengyel served in various operational and staff assignments, primarily as an Instructor Pilot and unit Weapons Officer in the F-16 Fighting Falcon.

1981 Bachelor's degree in chemistry, University of North Texas 1984 Squadron Officer School, Maxwell AFB, Alabama 1988 Air Force Fighter Weapons Instructor Course, Nellis AFB, Nevada 1994 Air Command and Staff College, by seminar 2001 Air War College, by correspondence 2008 National Security Management Course, Maxwell School of Citizenship and Public Affairs, Syracuse University, N.Y. 2009 Capstone General and Flag Officer Course, National Defense University, Fort Lesley J. McNair, Washington, D.C. 2010 Combined Force Air Component Commander Course, Maxwell AFB, Alabama 2010 Harvard John F. Kennedy School of Government, Program for Senior Executives in National and International Security, Cambridge, Mass.