A group of Chicago aviation security officers on Wednesday filed a federal class-action lawsuit against the city of Chicago and the state’s Law Enforcement Training and Standards Board, claiming the two government entities retroactively erased their work histories and demoted them from police officers to security guards.Plaintiffs Keia Yates, Leonardo Rodriguez and Johnny Jimmerson are seeking actual and compensatory damages after the city and the state training board decertified them and their Department of Aviation …