Camp Hansen
From December 1990 to March 1995, Estrada served as first sergeant for Intelligence Company, 3rd Surveillance Reconnaissance and Intelligence Group, Camp Hansen, Okinawa, Japan; Marine Security Force Company, Norfolk, Virginia; Electronics Maintenance Company, 1st Maintenance Battalion, 1st Force Service Support Group, Camp Pendleton; and Alpha Company, 1st Light Armored Reconnaissance Battalion, 1st Marine Division, Camp Pendleton.