Shown in the Wasp Micro UAV. The assassinationbot is believed to be an armed version of the Wasp Micro UAV
Wired's Danger Room reports that the Air Force Research Laboratory has completed developing a Micro-Air Vehicle (MAV) with innovative seeker/tracking sensor algorithms that can engage maneuvering high-value targets.
Special Forces already make extensive use of the Wasp drone made by AeroVironment. This is the smallest drone in service, weighing less than a pound. It has an endurance of around 45 minutes, and line-of-sight control extends to 3 miles. It might seem limited compared to larger craft, but the Wasp excels at close-in reconnaissance. Its quiet electric motor means it can get near to targets without their ever being aware of its presence.
A tiny warhead, weighing a fraction of a pound, could mean extremely little collateral damage, compared to the 20-pound warhead on a Hellfire.