The 337th Test and Evaluation Squadron is a squadron of the United States Air Force. It is a part of the 53d Test and Evaluation Group of the 53d Wing. Its primary task is to test and evaluate modifications on the B-1 bomber, as well as to train future aircrews to fly upgraded B-1s. The 337th is headquartered at Dyess AFB, Texas, though it operates out of a number of bases throughout the United States.
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