flexible gunner造句

Trainee flexible gunners were reassigned to other bases or separated.
In December 1944, P-63 Kingcobra fighters were assigned to the school to help train flexible gunners in fighter defense.
Recruits who were classified as possible flying personnel were sent to one of the three preflight and classification centers of the Flying Training Commands ( Eastern, Central or Western ) for further classification as a flying air cadet for, bombardier, navigator or flexible gunner training.
There were no dedicated flexible gunnery training schools prior to World War II, and as combat aircraft production was ramping up around the country, there was a desperate need for qualified defensive gunners to man the B-17s, B-24s, B-26s and other aircraft . Also, flexible gunners were all enlisted personnel.
Air crew needs resulted in the successful training of 43, 000 bombardiers, 49, 000 navigators, and 309, 000 flexible gunners, many of whom also specialized in other aspects of air crew duties . 7, 800 men qualified as B-29 flight engineers and 1, 000 more as radar operators in night fighters, all of whom received commissions.
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