National Geographic : 1943 Jul
Acme Mate and Nest Will Lure This Pigeon Home with a Message Each patrol airship takes along a crate of six birds. Four carry routine messages to the loft. Two are reserved for emergencies. Should ship and radio be disabled, they will direct rescue (page 96). lan lrnocugrapner Wvilara a.tuiver With Pencil, Calipers, and Chart, the Navigator Plots Our Course This cadet gets a fresh problem every hour calculating the minute theship will be over a predeterminedpoint (page 81). He wears the inflatable rubber life jacket which all hands must put on astheblimp goes tosea.