FOX 2 has exclusively learned that three Detroit fire chiefs have resigned for their role in the injury of a firefighter two months ago. On October 13, Detroit Fire Engine 40 responded to a mutual aid call at a house in Highland Park. According to department officials, Lt. David Webster was signed in as the officer in charge of the crew - but it was an inexperienced firefighter in his place. The two had swapped shifts. While fighting the fire, one of the crew members fell through the floor and was severely burned. He was taken to Detroit receiving by a private ambulance where he waited for treatment.