And, one more: there was once an Allertor at the Round Hill VFD, as well, and possibly another at the old Purcellville VFD. In Damascus, MD, there were two Thunderbolts at the VFD, one of which was a 1003. There was also an Allertor in Damascus, next to the school. There was an Allertor across the way from the fire station in McLean, VA. There used to be a Thunderbolt on top of the Rosslyn fire house in Arlington. There was a Thunderbolt behind the Seven Corners Fire Station in Fairfax County. There was an Allertor near the Greater Springfield Fire Company in VA. There was a Thunderbolt in downtown Alexandria. Lorton had a Thunderbolt. Pohick had a Thunderbolt. Penn Daw had a Thunderbolt. There was a Thunderbolt around the Tysons Corner area. Bailey's Crossroads used to have a Thunderbolt. There were a few Thunderbolts on the perimeter of Fort Myer. Back than the volunteer stations in Arlington County had sirens too, Falls Church had a Darley Model 2 mounted on a tower behind their station. Emmitsburg, MD had a 3T22 on the roof of their fire station (they have Whelens now). Thurmont, MD had a 3T22 on a pole behind Guardian Hose Co. Apparently, just about every community in Montgomery County, MD had a Thunderbolt on top of their city hall, as recent as the early '90s.
Emmittsburg still has the 3T22 mounted on the roof of thier station, it sounds in attack sadly without the dampers (been blasted by it a few times sitting at the light on my way home from my old job). The Whelens are actually part of the FEMA system for the National Fire Academy there in Emmittsburg, there is also a Whelen mounted on the roof of a building at Mount Saint Mary's University that is for campus alerting. The 3T22 in Thurmont is still there as well and is still in use as is the Model 5 for the rescue squad (though that is manually activated now and not really used). There is a very large smattering of 3T22's in Frederick County, Rocky Ridge, New Midway, Jefferson, Emmittsburg, Thurmont, Lewistown and Libertytown all have 3T22 sirens, Walkersville has a HOR 5hp Siro-drone on their old station, Fort Detrick has a bunch of Modulators (not enough in my opinon for what is there though, than again if any of THAT gets released the sirens aren't really going to help matters LOL)