Drone Footage Key in Assault Conviction as Montgomery County’s DFR Program Demonstrates Impact on Evidence Collection and Situational Awareness. A press release issued today by the Montgomery County State’s Attorney’s Office touted the first conviction as a result of their Drone as First Responder (DFR) program after a jury found Jovan Ali guilty of second-degree assault, stemming from an incident in April. Key to the prosecution was footage gathered by Raven 1 that showed Ali taking out a knife at the intersection of Georgia and Sligo in Silver Spring before stabbing his victim, leading to his hospitalization.