After retirement from the USAF in 2003, he became a company director for General Dynamics, DPL Inc., KBR, Inc., Precision Castparts Corp., MTC Technologies, Battelle Memorial Institute and USAA.

[2] Lyles is also a trustee of Analytic Services and a managing partner of Four Seasons Ventures, LLC.

[2] He chairs the "Rationale and Goals of the U.S. Civil Space Program" committee of the United States National Academies.

In December 2009, General Lyles was appointed to the President's Intelligence Advisory Board by the White House.

This article incorporates public domain material from the United States Air Force