LtCol Kerrigan is originally from Stafford, Virginia. He graduated from Christopher Newport University in 2005 with a B.S. in Governmental Administration and subsequently commissioned as a Second Lieutenant. From September 2005 to June 2006, he attended the Basic Officer Course and Infantry Officer Course in Quantico, VA.
In June 2006, he was assigned as Platoon Commander, Combined Anti-Armor Team (CAAT) Platoon, Weapons Company, 3d Battalion, 6th Marines and deployed to Habbaniyah, Iraq in support of Operation Iraqi Freedom (OIF). In September 2007, Lt Kerrigan was assigned as Executive Officer, Company I, and deployed to Fallujah, Iraq in support of OIF. Upon redeployment, he was assigned as Commanding Officer, Headquarters and Service Company.
From June 2009 to June 2012, Capt Kerrigan was assigned as Platoon Commander, 3rd Fleet Antiterrorism Security Team (FAST) Company in Norfolk, VA. During that time, he completed deployments to Naval Station Guantanamo Bay, Cuba and Naval Support Activity, Bahrain and finished his tour as the Training Officer for Marine Corps Security Force Regiment.
In July 2012, Capt Kerrigan attended Expeditionary Warfare School (EWS) in Quantico, VA, and graduated with distinction.
In July 2013, Capt Kerrigan was assigned to 2d Battalion, 7th Marines (2/7) and assumed command of Company E. In 2014, he deployed as the Crisis Response Company Commander with Special Purpose Marine Air Ground Task Force-Crisis Response-Central Command (SPMAGTF-CR-CC) 15.1 in support of Operation Inherent Resolve (OIR). Upon redeployment, Maj Kerrigan was reassigned as the Operations Officer. Maj Kerrigan redeployed to Al Jaber, Kuwait in direct support of OIR as the Ground Combat Element (GCE) Operations Officer, SPMAGTF-CR-CC 16.2. Maj Kerrigan finished his tour with 2/7 as the Battalion Executive Officer.
From June 2017 to April 2020, Maj Kerrigan served as the Commanding Officer of Recruiting Station Baton Rouge.
From May 2020 to June 2022, LtCol Kerrigan was assigned to the White House as the Military Aide to the President.
On, 23 June 2022, LtCol Kerrigan assumed command of 1st Battalion, 8th Marines, 6th Marine Regiment.
Additional schools LtCol Kerrigan has attended include: Marine Corps Command and Staff College, Operations and Tactics Instructor Course, Weapons and Tactics Instructor Course, and the Martial Arts Instructor Course. He received a Masters of Education from Liberty University in 2012 and completed the 2022 MIT Seminar XXI as a National Security Policy Fellow. LtCol Kerrigan is currently a Strategy and Statecraft Fellow with the Center of Strategic and International Studies.
LtCol Kerrigan has received the following personal awards: Defense Superior Service Medal, Meritorious Service Medal (with gold star in lieu of second award), Navy and Marine Corps Commendation Medal (with gold star in lieu of second award), Navy and Marine Corps Achievement Medal (with combat distinguishing device; with gold star in lieu of second award), and the Combat Action Ribbon.
LtCol Kerrigan is married to the former RaeAnn McKenzie of Keller, Texas and together they have two sons (Austin & Beaux) and one daughter (Emily Belle).