15:50: Stations 15, 27, 36, and 45 alerted for reports of smoke in commercial building, 132 Pittsburgh Street in Saxonburg Borough. There is a haze of smoke but no fire visible; evacuation was in progress as of dispatch.
15:52: Chief 15 on scene with nothing showing, investigating.
15:53: Station 36 second alert.
15:57: Engine 15 en route. Chief 15 telling Engine 15 he believes he has the problem located. Control stating still no acknowledgement from 36. Engine 27 en route.
15:58: Engine 27 instructed to proceed non-emergency for now.
15:59: 45-3 called en route and was immediately directed to hold in station.
16:00: Engine 27 was canceled by Command. Chief 15 states the problem was identified as an overheated amplifier for a radio system.