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.