I had heard of these guys before, but this was the first time I saw one in person. They make themselves pretty scarce. Saw him on the ramp at Edwards: http://eje.railfan.net/dpdp/temp/DSCN7880.jpg
These guys do adversary work for the Army at Fort Irwin and other ranges. More info about them here: http://www.almc.army.mil/alog/issues/MayJun01/MS609.htm
It would take a bit of scratch building, but certainly make an interesting model. There's numerous laser targeting and other equipment added.
Dave
-DPD Productions - Custom Scanner, MURS, & Ham Antennas-
http://eje.railfan.net/dpdp/