could be a handful of basesWhere I live we occasionally get groups of military choppers going directly overhead from Ft.Bragg to a base somewhere in VA (I tracked them one time, but forget the name of the base). I think the most we had at one time was about 15. Makes the dishes rattle LOL
And yes, definitely Ride of the Vakyries plays in my head
I am south of RVA, and get them passing over all the time, but I am not far from Pickett, Ft Lee, RIC ,
I followed one on llightradar once that went to the Cville area (no idea why) and one towards lynchburg,