Lieutenant Colonel Grasso is a native of Quantico, Virginia. He graduated Virginia Tech at Blacksburg, Virginia in 2000 receiving a BA in History. In the same year he received a commission in the United States Marine Corps. Following completion of The Basic School and Field Artillery Officer Basic Course, 2001 he was assigned to 2D Battalion, 11th Marines Regiment, 1st Marine Division where he served as a Forward Observer, and Fire Direction Officer for Battery F. In 2003 to 2004 he served as Artillery Liaison Officer, Weapons Company, 1st Battalion 5th Marines and participated in Operation IRAQI FREEDOM. In 2004 Lieutenant Colonel Grasso served as Executive Officer Battery E, 2nd Battalion, 11th and Battalion Assistant Logistics Officer.
In 2004, he reported to the 3D Fleet Anti-Terrorism Security Team (FAST) Company where he served as Assistant Platoon Commander and Platoon Commander for 3rd Platoon and Platoon Commander 5th Platoon. Lieutenant Colonel Grasso participated in Operation UNIFIED ASSISTANCE in response to the 2004 Boxing Day Tsunami and performed multiple missions in support of; Commander, 7th Fleet, Commander, Puget Sound Naval Shipyard, and JTF-Guantanamo. Following his platoon assignments Lieutenant Colonel Grasso served as the Executive Officer, 3D FAST Company until 2007.
In 2007, Lieutenant Colonel Grasso attended the Expeditionary Warfare School in Quantico, Virginia. After graduating in 2008 Lieutenant Colonel Grasso received orders to 1st Battalion, 12th Marines Regiment. He assumed duties as the Assistant Operations Officer and deployed with 1st Battalion, 12th Marines to Operation IRAQI FREEDOM as Task Force Military Police, II Marine Expeditionary Force. In June of 2009, Lieutenant Colonel took command of Battery A, 1st Battalion, 12th Marines until June of 2010.
In July of 2010 Lieutenant Colonel was transferred to Marine Forces Pacific Command to serve as the Australian, New Zealand, South Pacific Islands and Mongolia Desk Officer, Policy and International Affairs Branch in the G-5. During this tour he developed engagement and activities with partner nations in the Asia Pacific and earned the additional specialty of Southeast Asia Regional Affairs Officer. He was then assigned as a Foreign Military Exchange student in the New Zealand Command and Staff College where he also studied International Security Studies Massey University.
Lieutenant Colonel Grasso is a graduate of; Helicopter Rope Suspension Course, Dynamic Drivers Course, Information Operations Course, Joint Firepower Controller Course (Distinguished Graduate), Expeditionary Warfare Staff Planner Course, Anti-Terrorism Force Protection Officers Course, Contemporary Insurgent Warfare Course, and the Expeditionary Warfare School. He is a graduate of the Asia Pacific Orientation Course of the Asia Pacific Center for Security Studies and the Security Cooperation Managers Course. Lieutenant Colonel Grasso completed the New Zealand Joint Command and Staff College in December 2012. From January 2013 to July 2016 he was assigned as the Executive Assistant to the Political Advisor for the Vice Chairman of the Joint Chiefs of Staff and Supreme Allied Commander Transformation NATO. Following his Joint Staff tour he completed Joint and Combined Warfighting School and received his Joint Qualification. In July of 2016 he transferred to 1st Battalion, 12th Marines, Marine Corps Base Hawaii, Kaneohe and served as Executive Officer until July of 2017. Lieutenant Colonel Grasso served at Marine Corps Staff Training Program, MAGTF branch as a Fires staff officer from July 2017 til July 2018. Lieutenant Colonel Grasso is currently the Inspector-Instructor, 4th Air/Naval Gunfire Liaison Company, West Palm Beach, Florida.
His personal awards include the Defense Meritorious Service Medal, Meritorious Service Medal (Gold Star in Lieu of 2nd award), Navy and Marine Corps Commendation Medal (Gold Star in Lieu of 2nd award), the Navy and Marine Corps Achievement Medal with Combat Distinguishing Device (Gold Star in lieu of 3rd award), the Humanitarian Service Medal, and the Combat Action Ribbon.