It could be nothing though. My wife was working for a defense contractor, one day the guy with the computer just opposite her got taken down by the FBI in the middle of the day. Three agents walked in with jackets covering their badges and dramatically took their jackets off to reveal their badges and arrest him as they walked up on his desk. Turned out he was running some sort of child pornography ring from his work computer. So it could just be some sort of totally unrelated crime like that, though helicopters is damn dramatic.
