No idea of tail number, but saw this weird rig at KRVS (Tulsa) today (sorry didn’t have camera). Looks like a Gulfstream with a mohawk. Owned by L-3 communications, not to be confused with level 3 communications. Pretty sure it is blocked as never seen it arrive or depart.
So as I type this after a few cocktails even I wonder what is the point of my post…Oh Well, let the rum talk.
Found a photo http://www.airliners.net/photo/Grumman-American-G-1159B/0853662/&sid=9a20ae3d8e9b123d1a1cc9025dff1bf9
Hasn’t flown unblocked under tail number a in a while: flightaware.com/live/flight/N178B
Registration says owned by MDA, although it may be operated by L-3: flightaware.com/resources/registration/N178B
What kind of mileage does that thing get?
It’s not about the destination with that one… 
“The Ballistic Missile Defense Organization (BMDO) has requirements for the collection of missile test and Evaluation data including photo documentation, characterization of target scenes, metric and radiometric characterization of systems, and phenomenology/signature data. The upgrade platform is being designed and developed for the High Altitude Observatory (HALO) to address these requirements. It will also address the data-flow and computation effort designed to support rapid data products and prototype future sensor platforms that could be applied to surveillance applications. The HALO aircraft has a legacy as a reliable BMDO data collection asset. This data collection has been limited to sensors mounted inside the HALO aircraft cabin while viewing missile scenes through optical windows. The traditional approach has limited data collection capabilities due to window transmission, window aperture, and field of regard (FOR). The HALO upgrade will alleviate these problems with the installation of a pod mounted on the top of the HALO aircraft.”
It’s been operating over the western pacific along with HALO1 and WASP1. Heard them all several times over the past couple of weeks on HF. WASP1 was at Honolulu about a week ago (that’s the DC10 with the big hole in the side of it). They’re all operated by the MDA. Obviously none of them are the trackers…