fly at

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References in periodicals archive ?
These flies are about the size of houseflies but have big red eyes and fly at dawn or dusk
Carrier personnel, particularly flight deck crews, did not understand why they had to work practically 24 hours a day just to allow a few aviators to fly at night.
Although it wasn't the helicopter ride Alyson had hoped for, a whirl in an airplane was the closest she could get to learning how to fly at the time, so she signed up for an introduction in 1995.