The Small Tactical Munition (STM) is a 13.5-pound bomb designed specifically for use aboard the US military’s existing fleet of small UAVs. At 22 inches long, the STM is the smallest air-launched munition Raytheon produces—so small, two can be packed into a single launch tube. So small that it can be carried by a 12-foot Shadow drone rather than only by the Predator 27-foot Predator. The STM utilizes a dual-mode, semiactive laser seeker and GPS-inertial navigation system for guidance meaning that the munition’s operator can either direct it to a specific location or laser-designated target—moving or still—before choosing to detonate it over the target, at the target, or five seconds from now with a fuse-delay timer.