This 2009 orthogonal aerial image from Microsoft`s Bing "Maps" website, http://www.bing.com/maps/, shows that the former barracks (Quonset huts or Butler buildings) at the former Joelton AFS have now been removed. Those buildings appeared in all earlier known aerial images.

Since the current Bing "Maps" aerial image is not real-time, possibly other buildings have since been removed (?). There`s no way to know without a site visit.