The V-shaped formation of geese in flight ? known as "vortex surfing" ? is being studied as a way to slash fuel bills at the Air Force's gas-guzzling Air Mobility Command.
Source: http://www.npr.org/blogs/thetwo-way/2013/07/19/203628048/birds-teach-the-air-force-a-better-way-to-fly?ft=1&f=1007
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