Homeland Security Secretary Alejandro Mayorkas says the federal government has sent personnel and technology to help State Police drone investigation.

In the last several weeks, media reports have cited incidents of unidentified drones flying over defense bases in England and Germany.

White House said many of the drone sightings are actually manned aircraft. Sheriff doesn't disagree, but says they have documented many drones.

During the briefing, the officials said the FBI originally launched its investigation into the mystery drones after a sighting by New Jersey State Police. Defense representatives now say there were ...