Roswell Report: Case Closed 

Fig. 41. For the first 10 balloon flights, dummies were placed in insulation bags to protect temperature-sensitive equipment.  These bags may have been described by at least one witness as "body bags" used to recover alien victims from the crash of a flying saucer.  (U.S. Air Force photo)

McAndrew, James. The Roswell Report :Case Closed. Published by the Headquarters United States Air Force through the U.S. Government Printing Office, Washington D.C. 231 p., 1997.