SgtMaj McAdams was born in East Meadow, NY and enlisted in the Marine Corps in April 2003. After graduating from the Third Recruit Training Battalion, Company M, Marine Corps Recruit Depot (MCRD), Parris Island, SC he attended Marine Combat Training at Camp Geiger, NC and Avionics “A” School in Pensacola, FL. In April 2004, he graduated from AV-8B Avionics “C” School at MCAS Cherry Point receiving his Marine Occupational Specialty 6332 as an AV-8B Harrier Electrician.
In April 2004, Private First Class McAdams reported to Marine Attack Training Squadron (VMAT) 203, MCAS Cherry Point, NC for duty as an AV-8B Avionics technician. In June 2004, he was promoted to Lance Corporal and in September 2005, he was meritoriously promoted to the rank of Corporal and assigned as the Avionics Night Crew Supervisor. In September 2006, he was promoted to the rank of Sergeant. In April 2007, Sgt McAdams reported for duty with VMA-542, MCAS Cherry Point, NC where he served as the Avionics Workcenter Supervisor. In August 2007, he deployed in support of Operation Iraqi Freedom (OIF) 06-08.
In May 2008, Sgt McAdams reported to Drill Instructor (DI) School MCRD Parris Island, SC. From 2008 to 2012 he served as a DI and SDI in Company M and as Chief Drill Instructor in Company I, Third Recruit Training Battalion. In September 2011, SSgt McAdams was awarded the coveted Parris Island DI of the year.
In January 2012, SSgt McAdams reported to VMA-231, MCAS Cherry Point, NC where he served as Squadron Gunnery Sergeant, Avionics Division SNCOIC, and Quality Assurance Division Chief. While assigned to VMA-231 SSgt McAdams deployed in support of Operation Enduring Freedom (OEF), and the 31st Marine Expeditionary Unit. In April 2014, he was meritoriously promoted to the rank of Gunnery Sergeant.
In March 2016, GySgt McAdams was selected as an Assistant Marine Officer Instructor (AMOI) and assigned to Rensselaer Polytechnic Institute in Troy, N.Y. As an AMOI, GySgt McAdams augmented Officer Candidate School each summer serving as a Sergeant Instructor, Platoon Sergeant, and Company 1stSgt. In May 2018, he was promoted to the rank of 1stSgt.
In September 2018, 1stSgt McAdams reported to 2d Battalion, 8th Marines, Camp Lejeune, NC where he served as Golf and Headquarters and Service Company First Sergeant. While assigned to 2/8 he deployed in support of the 26th Marine Expeditionary Unit and Unit Deployment Program 21.2. In March 2022, SgtMaj McAdams assumed the duties of Battalion Sergeant Major for Wounded Warrior Battalion-East. In April 2024, SgtMaj McAdams assumed the duties as the Command Senior Enlisted Leader for VMM-262, MCAS Futenma, Okinawa, Japan where he currently serves.
SgtMaj McAdams personal decorations include the Meritorious Service Medal (2nd award), Navy and Marine Corps Commendation Medal (4th award), and the Navy and Marine Corps Achievement Medal (3rd award). He holds a Bachelor of Arts degree in Management with a concentration in Leadership from American Military University.