The 1369th Photographic Squadron (MAC) at Vandenberg Air Force Base in California has performed a series of cold weather tests on eine cameras and a tracking mount. The tests were conducted to determine the capability of these equipments to operate successfully at the extreme cold temperatures to be encountered in support of the Operational Base Launch (O.B.L.) program. The testing was accomplished at the Pacific Missile Test Center (for merly Naval Missile Center) Environmental Laboratory, Pt. Mugu, California.