County firefighters are mourning the loss of a former Glen Burnie firefighter killed early Sunday in the medevac helicopter crash in Prince George's County.

Trooper 1st Class Mickey Lippy, 34, of Westminster was one of four people killed when a state police helicopter went down in Walker Mill Regional Park after encountering poor visibility during a medical call shortly after 12:30 a.m. A teenage girl critically injured in the crash remains in a Baltimore hospital.

A flight paramedic, Trooper Lippy worked as a county firefighter at the Marley Fire Station from August 2000 to October 2004, said Battalion Chief Matthew Tobia, a...