A series of drone sightings over military bases across the country have renewed concerns that the US doesn’t have clear government-wide policy for how to deal with unauthorized incursions that could potentially pose a national security threat.

The Pentagon is arming two military installations in New Jersey with counter-drone technology, giving them extra tools to better defend their airspace from any unauthorized drone incursions. One of the systems the Pentagon mentioned by name is the Dronebuster.

There have been a series of mystery drone sightings across the United States and near American bases in European countries.