Perhaps...just perhaps, could it be that maybe they want to test a battlefield radar? Maybe using adapted B-2 gear. It's just my two cents worth, here. Hey, BAe had a mini-AWACS version of it's proposed SABA battlefield jet as seen in BRITISH SECRET PROJECTS: HYPERSONICS.
Maybe the Army over here is thinking the same thing.
Then again, maybe it's just a simple testbed for radars.
Moonbat