"To understand and protect our home planet; to explore
the universe and search for life; to inspire the next generation of
explorers... as only NASA can."
Source: The former mission statement of the
National Aeronautic and Space Administration. This past February,
however, NASA altered the statement -- removing the portion about
learning more about Earth, and focusing instead on manned missions
to the Moon and Mars.
Land and Hold Short Operations -- LAHSO is an air traffic
control procedure intended to increase airport capacity without
compromising safety. Allows landing on a portion of the runway,
short of an active taxiway crossing.
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