At approximately 15:00 hours, several fire companies in Harford County were alerted for fill-in details at Baltimore County fire stations while those crews were at the scene of a train derailment in the Rosedale area. Jarrettsville's Engine 712 responded to fill-in Baltimore County Station 12 in Middle River. Our engine and crew manned that station until the early hours of the following morning, responding to four medical calls during that time.