Mr. McMahon is the Assistant Secretary of Defense for Logistics and Materiel Readiness.  He serves as the principal staff assistant and advisor to the Under Secretary of Defense for Acquisition and Sustainment, Deputy Secretary of Defense, and Secretary of Defense on logistics and materiel readiness in the Department of Defense, and is the principal logistics official within the senior management.  Mr. McMahon provides oversight of logistics policies, practices, and efficiencies in support of enhanced readiness to the Warfighter and manages over $170 billion in Department of Defense logistics operations. 

Prior to this role, Mr. McMahon served as President of Fickling Management Services in Macon, Georgia.  He led a team of commercial real estate professionals whose portfolio spanned eight states.  Previously, he served as the Director of Field Operations and Site Lead (Warner Robins Air Force Base, Georgia) of the Boeing C-17 Globemaster III Integrated Sustainment Program (GISP), and as the CEO of the 21st Century Partnership in Warner Robins, Georgia.

Mr. McMahon retired from the Air Force as a Major General in 2012, after more than 34 years of service.  Born in Toledo, Ohio, he entered active duty in the United States Air Force after graduation from the U.S. Air Force Academy in 1978. His command experience includes a maintenance wing, a logistics group and two maintenance squadrons. He has served as the Director of Maintenance for the Ogden Air Logistics Center, and as the Director of Propulsion for the San Antonio ALC. General McMahon was also the military assistant to the Assistant Secretary of the Air Force for Installations, Environment and Logistics, Headquarters U.S. Air Force. He has also served as the Director of Logistics, Deputy Chief of Staff for Logistics, Installations and Mission Support, Headquarters U.S. Air Force. 

Immediately prior to retirement, General McMahon served as Commander of the Warner Robins Air Logistics Center, Robins Air Force Base, Georgia. He was responsible for worldwide logistics support for C-130 and C-5 transport aircraft, F-15 fighter aircraft, U-2 reconnaissance aircraft as well as support for remotely piloted vehicles, Air Force helicopters, air-to-air missiles, surface motor vehicles and high-technology airborne electronics, avionics and electronic warfare requirements. The center was one of three Air Force air logistics centers and the largest single-site industrial complex in the state of Georgia.

Mr. McMahon holds a Bachelor of Science degree from the United States Air Force Academy and a Master of Science degree in Maintenance Management from the Air Force Institute of Technology.