Escape and evasion map printed on playing cards distributed to Prisoners of War which could be soaked and pealed apart revealing the escape map. Many of the maps of the Pacific region were printed by the US Army Map Service, while the UK was responsible for many of the European Theatre maps. Many of the US Navy charts were folded in envelopes and distributed to the air crews before a mission, and to be turned in when the mission was successfully completed. They were called "drift charts" by the Navy, "...since their prime purpose was to indicate to aircrews survivors in their life rafts
Medical certifications for pilots Medical certifications for pilots In the United States, there are three classes of medical certifications for pilots; such certificates are required to legally exercise the privileges of a Pilot exercising the privileges of either a Private, Commercial or Airline Transport Pilot license. Medical Certificates are not needed for Glider, Balloon, Recreational or Sport Pilot certifications. Each certificate must be issued by a doctor approved by the Federal Aviation Administration to a person of stable physical and mental health. The three kinds are: Medical certificates higher than the minimum requirement for a pilot license level still allow the holder to exercise