FAIRFIELD - Police in Fairfield are warning senior citizens about suspected thieves posing as trained professionals. Authorities say the advice comes after a man's wallet was stolen by a woman pretending to be a nurse. They say they are heading to senior centers to provide education on the issue to limit future incidents. Officials say seniors should keep their doors locked and require identification from anyone who seems suspicious. The woman accused of posing as the nurse faces burglary and larceny charges.