Tactical Surveillance Institute Tactical surveillance instruction for police and military Skip to content HomeInstructor BRIAN DAVISInstructor LARRY WINSTON Tactical Surveillance Institute Tactical Surveillance Institute (TSI) provides comprehensive in-service training to law enforcement and militar...

Tactical Surveillance Institute Tactical surveillance instruction for police and military Skip to content HomeInstructor BRIAN DAVISInstructor LARRY WINSTON Instructor BRIAN DAVIS Brian Davis accomplished 35 year career with the Los Angeles Police Department 30 years experience in criminal surveill...