And the improved RAZON from the wiki In April 1942, the USAAF's Air Materiel Command [became part of ATSC (Air Technical Service Command) in 1944] began the development of the Azon family (VB-1 half-ton and VB-2 one-ton) guided bombs.[4][5] Following on the VB-1 Azon bomb (azimuth-only), the Razons used two tandem annular wing assemblies, the aft assembly used for control. "The Razon guidance kit had two octagonal shrouds (similar to the 12-sided annular tail of the Fritz X guided ordnance) in a tandem arrangement. The most problematic part in Razon development was to build a suitably modified bombsight, which would allow the bombardier to correctly judge the bomb's deviation in range so that the range control could be used effectively."[6][7] The guidance command link used up to 47 preset channels. Around 3,000 Razons were built during 1945.[8][9] Azon and Razon testing continued through mid-1946 in the Mojave Desert of California