High Quality Content by WIKIPEDIA articles! The AIR-ONE Emergency Response Coalition (formerly named the Law Enforcement Aviation Coalition) supports several agencies who together provide air support to law enforcement, emergency management and fire/EMS agencies. Known by their familiar "AIR-ONE" call sign, these helicopters are frequently called upon by agencies who would otherwise not have air support capabilities available. AIR-ONE is a not-for-profit, 501(c)3, charitable organization, managed and staffed by volunteers who are experienced professionals from the aviation, law enforcement, emergency management and fire-rescue sectors. As the founding and coordinating agency, the Winthrop Harbor (IL) Police Department provides 24-hour dispatch services for all of the mutual-aid AIR-ONE helicopters.