I've found what appears to be an ASC iForce siren (or some kind of electronic omni) located at Barrow Onshore Terminals, Barrow-in-Furness, LA13 0QU: 54°05'41.3"N 3°10'46.3"W https://goo.gl/maps/S8VogrzzvPZS2PHW7 I believe it's an I-Force. The Davidson Army Field in my state of Virginia h...