EMS Strike Team The development of ambulance strike teams (ASTs) and medical task forces (MTFs) were a critical component of the state's ability to respond to disasters and homeland defense efforts. An AST is made up of self-supporting units of the same type and kind of medical resource, with common communication and a leader. These units are able to receive, triage and transport victims from the scene of a disaster. AST teams will consist of five medic trucks, command staff, support staff, and law enforcement support. Responding to state level disasters both natural and manmade are becoming an important function of Durham County EMS.