Officially, the Special Collection Service doesn't exist (2012)
theweek.com
theweek.com
Ergo, their credibility doesn't exist.
What was it that "Dubya" mangled when he said it? "You can fool me once... But ya can't get fooled again..."
https://maps.google.com/maps?q=beltsville,+md&ll=39.033795,-...
Other weird links: here's the StreetView car passing some kind of weird truck with cables and tanks on it: https://maps.google.com/maps?q=beltsville,+md&ll=39.030349,-...
Turn around to find the "Area Under Video Surveillance" sign (surveillance? for a corn field, a barn and a forest?) https://maps.google.com/maps?q=beltsville,+md&ll=39.030268,-...
Zoom out, and there's one large barn on the map view. https://maps.google.com/maps?q=beltsville,+md&ll=39.02984,-7...
There are a lot of gates. A lot. https://maps.google.com/maps?q=beltsville,+md&ll=39.033753,-...
Whatever this facility is, there are lots of gates and fences and lots of trees blocking view. The weird sprawling government fields could just be some kind of FDA testbeds (there's more nearby, I forget what road) but it's just... creepy. https://maps.google.com/maps?q=beltsville,+md&ll=39.037453,-...
(Ironically close to Snowden Pond)
The truck in the picture is a vacuum truck. Nothing odd about it, I see them in pretty much every city. They unclog pipes and remove material from dig sites.
More weird trucks:
http://www.daimler-trucksnorthamerica.com/download/2010/imag...
http://www.ci.arcadia.ca.us/images/sewer_truck.jpg
http://barry-williams.com/wp-content/uploads/2012/11/sewage_...
http://pittonplumbing.com/wp-content/uploads/2012/06/New-Vac...
You'd definitely want something heavy (like a concrete truck or garbage truck or something) if your purpose is a heavy, armored vehicle. A UPS/fedex "bread truck" is great for a lot of surveillance, although people would be suspicious if one were left parked. Utility works better for that.