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
Pilot certification in the United States authorized to exercise piloting privileges. The pilot certificate is one of several kinds of "airman certificates" issued by the FAA. A pilot is certificated to fly aircraft at one or more named "privilege levels" and, at each privilege level, rated to fly aircraft of specific "categories". Privilege levels of pilot certificates are, in order of increasing privilege: Pilots can be rated in these aircraft categories: Most aircraft categories are further broken down into "classes". If a category is so divided, a pilot must hold a class rating to operate an aircraft in that class: A student pilot certificate does not