odd places in georgia - quarantene stations?

when i googled public safety complex these odd looking places look strange after viewing "street view" on google maps. what are your thoughts on these locations and possible purpose....some are vacant? here r addresses

sandy springs trying to purchase one for post office and public safety complex but i cannot find documentation on this one. i only know its on johnson ferry road

378 and 430 and 424 midway road powder springs. this is where that train blocked local residences about 6 months ago

1082 al bishop drive marietta

3520 settingdown road cumming or forsyth county

11586 and 11574 maxwell road alpharetta ga

united states quarentine station-looks like just built 1600 clifton road atlanta ga

498 chattin dr canton will not allow the street view.