Original sentence: According to its union, Southern Air pilots have allegedly operated under one of the worst contracts in the industry and has had problems pilot hiring and retention.As of 2018, Southern Air and the pilots' union have signed an agreement changing the work rules to match those work rules contained in the Atlas Air pilots' contract
Edited sentence: <ref>{{cite web |url=.According to its union, Southern Air pilots have operated under one of the worst contracts in the industry and has had problems pilot hiring and retention