From Camp Pendleton, he was assigned to the Marine Barracks, U.S. Navy Supply Depot, Clearfield, Utah, as a security guard.

That was followed by the first of three tours as a drill instructor at Marine Corps Recruit Depot San Diego.

He served on the drill field until April 1952, when he rejoined the 1st Marine Division in Korea.

While serving as the company Gunnery Sergeant, he acquired the now famous spirited cry, "Oorah!".

Massaro then transferred to the Inspector-Instructor Staff of the 4th Force Reconnaissance Company in San Bernardino, California.