Having talked to a couple of people who think they have something to offer, my sense is that if there is an AoA, it is a classic black box. You can put data in and there are not many questions being asked in return, and there's no clue as to the internal logic (for instance, how is MPA being tied to the Sentinel or AWACS long-term missions?). Since the basic requirements could very easily be arranged to eliminate one or more of the potential candidates, this is not encouraging.