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- On September 11, 2001 according to U.
Question 1:
On September 11, 2001 according to U.S. Today 3,949 planes were in the air space over the United States when, for the first time in United States history, all air traffic was stopped. Though often overlooked, air controllers brought the planes and passengers down safely to the nearest airport. How long did it take for the air controllers to get everyone safely on the ground?
A. About two hours
B. About five hours
C. About three hours
D. About four hours
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