could be used to determine if the bomb was nuclear, and, if so, whether the Primary was plutonium or highly enriched uranium (HEU) A Case Study: Multiple Intelligence Disciplines characterizing Atmospheric Nuclear Tests France tested its first nuclear weapon on February 13, 1960 in Algeria. This came as no surprise, as multiple US intelligence sources and methods had been following the program since France began considering nuclear weapons in 1946. After Algerian independence, France moved its test range to French islands in the Tuamoto Archipelago in the Western Pacific. Typical monitoring scenarios for tests in 1968 and 1970 involved NSA COMINT determining that a French test was imminent. Upon that notice, KC-135R tankers, temporarily modified to carry MASINT sensors, would fly around the test area, as part of Operation BURNING LIGHT. One sensor system measured the electromagnetic pulse of the detonation. Another system photographed the nuclear cloud to measure its density and opacity. During FY 1974, additional SAC missions were flown to gather information on Chinese and French tests. U-2R aircraft, in Operation OLYMPIC RACE, flew missions, near Spain, to capture actual airborne particles that meteorologists predicted would be in that airspace BURNING LIGHT, the airborne EMP and cloud photography program, was the manned aircraft portion of a larger Defense Nuclear Agency program called HULA HOOP (1973 name) and DICE GAME (1974 name). Another portion of this program involved a US Navy ship, in international waters, that sent unmanned air sampling drones into the cloud. So, in 1974, both U-2R and drone aircraft captured actual airborne particles from nuclear blasts for the MASINT discipline of nuclear Materials Intelligence, while the BURNING LIGHT aircraft worked in the electro-optical and radio frequency (EMP) MASINT disciplines. References Military intelligence collection Intelligence gathering disciplines Soviet Union–United States relations