US air force cancels promotions over grading error in security test

Highly unprecedented anomaly' meant 135 people given incorrect scores and wrongly informed of promotions

The air force has canceled the promotions of dozens of service members after discovering what it said was a grading error in a test of their security knowledge.

The isolated and highly unprecedented anomaly" was announced in a press release on Tuesday, which said 135 airmen and women had been awarded incorrect scores on the security forces specialty knowledge test (SKT) and been wrongly informed they had earned promotion.