3-76. Airborne sensors and unmanned aircraft systems pose particular challenges for intelligence oversight. These intelligence systems provide commanders and civil authorities with powerful tools to help them assess the situation on the ground, particularly in the initial stages of a response. However, information gathered by these systems can conflict with the intelligence oversight restrictions. For example, an Army helicopter equipped with forward looking infrared may be tasked to assess the stability of flood control constructed earlier in the day. During the course of the surveillance mission, the aircrew may spot a group of looters near the flooding. They may legally report this to their chain of command, without identifying the looters, according to DOD Publication 5240.1-R, Procedure 12. According to DODM 5240.1, Procedure 3, information on U.S. persons, whether collected intentionally, incidentally, or voluntarily provided, must be evaluated promptly, and may be retained for evaluation for up to 5 years.