The S-TEC Sentry is a reconnaissance unmanned aerial vehicle (UAV) (or drone), developed in the United States in the 1980s.
Built by S-TEC systems of Texas (now part of DRS Unmanned Technologies), it is a battlefield mini-UAV in roughly the same class as the BAI Dragon drone.
It is built of carbon composition and Kevlar, and powered by a 19.5 kW (26 hp) piston engine in a tractor configuration.
After release in a target area, the cylindrical SFW pops out a small parachute to orient itself and then fires out four "skeet" projectiles in four directions.
S-TEC has teamed with TRW Corporation in the US and IAI of Israel to sell UAVs on the international market.