This TRIPwire Awareness Bulletin (TAB) is designed to raise awareness among law enforcement and first responders about the capabilities of commercial off-the-shelf (COTS) small unmanned aircraft systems (sUAS) and the potential threat of bad actors using these sUAS to deliver explosives to a target. Recent use of sUAS in conflict zones has demonstrated several tactics, techniques, and procedures (TTPs) that could be adopted by threat actors in the Homeland.