of the size and carrying capacity of the plane led the USAF to develop a larger plane to carry more surveillance gear, weaponry, and ammunition, the AC-130 Spectre. However, due to the strong demands of C-130s for cargo use there were not enough Hercules frames to provide Spectres for operations against the enemy. The USAF filled the gap by converting C-119s into AC-119s each equipped with four 7.62 minigun pods, a Xenon searchlight, night observation sight, flare launcher, fire control computer and TRW fire control safety display to prevent incidents of friendly fire. The new AC-119 squadron was given the call-sign "Creep" that launched a wave of indignation that led the Air Force to change the name to "Shadow" on 1 December 1968. C-119Gs were modified as AC-119G Shadows and AC-119K Stingers. They were used successfully in both close air support missions in South Vietnam and interdiction missions against trucks and supplies along the Ho Chi Minh Trail. All the AC-119G Gunships were transferred to the Republic of Vietnam Air Force starting in 1970 as the American forces began to be withdrawn. During the late 1960s and early 1970s, Air National Guard and USAF Reserve pilots flew C-119's to drop parachutist students for the US Army Parachute School at Ft. Benning, Georgia. After retirement from USAF active duty, substantial numbers of C-119s and R4Qs soldiered on in the U.S. Navy, U.S. Marine Corps, the Air Force Reserve and the Air National Guard until the mid-1970s, the R4Qs also being redesignated as C-119s in 1962. The last military use of the C-119 by the United States ended in 1974 when a single squadron of Navy Reserve C-119s based at Naval Air Facility Detroit/Selfridge Air National Guard Base near Detroit, Michigan, and two squadrons based at Naval Air Station Los Alamitos, California replaced their C-119s with newer aircraft. Many C-119s were provided to other nations as part of the Military Assistance Program, including Belgium, Brazil, Ethiopia, India, Italy, Jordan, Taiwan, and (as previously mentioned) South Vietnam. The type was also used by the Royal Canadian Air Force, and by the United States Navy and United States Marine Corps under the designation R4Q until 1962 when they were also redesignated as C-119. Civilian use A number of aircraft were acquired by companies who were contracted by federal agencies including the United States Forest Service (USFS) and the Bureau of Land Management (BLM) to