U.S. Senator Bill Nelson, D-Fla., is meeting with aviation leaders who say drones need to be federally regulated to ensure they don't get too close to airplanes landing or taking off from airports around the country.
Congress and President Obama have already kicked in about half of the $16 million annual cost to operate the program, but officials have said West Coast states ought to contribute substantial amounts of money for the network.
Scouring social media for users who are potentially dangerous is an ongoing battle in which the goal is continually evolving. Security officials are looking for ways to spot terrorists and not just bots.
The terrorist attacks in San Bernardino and Paris have prompted tech upgrades, including software provided as an application that public safety officials can use to send video, text and photos from their mobile phones.