Greeneville police now carry an automated external defibrillator in each patrol vehicle. The police department also is equipped with Mobile Trauma Kits carried by shift supervisors.Purchase of the lifesaving equipment was authorized earlier this year by the Greeneville Board of Mayor and Aldermen. The AEDs and trauma first aid kits, informally known as “Doc In a Box,” are part of ongoing GPD efforts “to safeguard our community,” police Capt. Steven Hixson said.