The article mentions several publicised experiments that were on this mission. Who knows what else it might be carrying or doing - anti-satellite weaponry, ICB

The article mentions several publicised experiments that were on this mission. Who knows what else it might be carrying or doing - anti-satellite weaponry, ICBM counter-measures, or for all we know it's been coasting about in standby mode with an empty bay all this time and the B in its name stands for "bluff" :)