multiple months on station - dream come true for data acquisition in a lot of civilian and not very civilian applications. Like a platform for that gigapixel/Argus continuously recording everything happening in the city. Almost not existent noise and IR signature, and with carbon fiber construction i'd suppose very low radar cross-section. It can toil for months near China/Russia/etc. airspace listening/watching/etc. Or electronic CAP/AWACS kind of mission during peace time over aircraft carrier group. Sky isn't even the limit :)