This very unusual video shows some lights in the sky being circled by a helicopter, which is the engine sound heard in the video. Very loud explosions also take place, of unknown origin.
This is (apparently) 3 flood lights on an emty building, a SWAT team training entry and a monitoring helicopter:
the son of the mother filming (and screaming) investigated it.
These pitch black videos don't really tell a lot even if they were of alien spacecrafts.