The Roswell Report: Fact vs. Fiction in the New Mexico Desert

Flight 7: Released from Alamogordo, New Mexico, 0509 MST, July 2, 1947 Descended at Cloudcroft, New Mexico Using a cluster array (Figure 3) of 13 350-gram rubber balloons and four larger lifting balloons, a 53-pound load was carried aloft on this flight. At 35,000 feet, the desired floating level, the lifter balloons were cut free. Figure 3: Train, Flight 7 When the train began to descend below 34,000 feet, lead shot was dropped in increments to maintain buoyanoy.