The following is a post from Sentient Developments.
It's the product of the Missile Defense Agency and they call it the MKV-L (Multiple Kill Vehicle). The hover bot is meant to be used as a bundle of missile interceptors deployed by a larger carrier. Objectives of this particular test included having the MKV-L hover under its own power and prove its capability to recognize and track a surrogate target in a flight environment.
Terminator style hunter-killer, here we come.