General Mahoney is a native of South Weymouth, Massachusetts, and graduated from Holy Cross in June 1987. He completed The Basic School (TBS) and Infantry Officer's Course (IOC), at Quantico, Virginia, in 1988.
After flight training in Florida and Texas and his qualification as an A6-E Intruder pilot, General Mahoney deployed to the Indo-Pacific with VMA (AW)-224, The Bengals. He completed transition training to the F-18 at Marine Corps Air Station (MCAS) El Toro and made multiple deployments with VMFA (AW)-224, VMFA-122 and VMFA (AW)-242 to the Indo-Pacific, Italy, and Iraq, based out of MCAS Beaufort, South Carolina, and MCAS Miramar, California. Additionally, General Mahoney served a tour as an instructor at the Marine Aviation Weapons and Tactics Squadron-1 (MAWTS-1) at MCAS Yuma, AZ.
He has held command at the squadron, group and wing levels. He completed a Joint Force tour as Chief of Staff of the Joint Improvised Explosive Device Defeat Organization at the National Training Center, Fort Irwin, California, and he served as the Executive Assistant to the Deputy Commandant for Programs and Resources at Headquarters, U.S. Marine Corps (HQMC).
His General Officer duties include Deputy Commander, U.S. Marine Forces Pacific; Director of Strategy and Plans at HQMC; Deputy Commander, U.S. Forces, Japan; Commanding General, 3rd Marine Aircraft Wing; and Deputy Commandant for Programs and Resources, HQMC.
General Mahoney was sworn in as the 37th Assistant Commandant of the Marine Corps on November 3, 2023.
General Mahoney is a graduate of the Infantry Officers’ Course, Weapons and Tactics Instructor Course (WTI), the Marine Division Tactics Course (MDTC), and the Navy Fighter Weapons School (TOPGUN). He has over 5000 hours of flight time in the A-6, F-5, F-18, and the F-35 and is a qualified Forward Air Controller and parachutist. He attended the Australian Command and Staff College and the Air War College at Maxwell Air Force Base. He holds Masters Degrees from the University of Canberra, Australia and the Air University with the highest academic distinction.