From 1987 to 1990 , he served as a Platoon Commander and Training Officer for the 1st Battalion 3rd Marines in Kaneohe , Hawaii .
While attending Marquette University , Mullen was commissioned in 1986 through the Naval Reserve Officers Training Corps program .
From 1987 to 1990 , Mullen served as a Platoon Commander and Training Officer for the 1st Battalion 3rd Marines in Kaneohe , Hawaii .
While attending Marquette University , Mullen was commissioned in 1986 through the Naval Reserve Officers Training Corps program .