As Congress considers a new immigration law that would expand the fleet of unmanned drones along the border, the agency in charge of border protection is increasingly offering the military-grade drones it already owns to domestic law enforcement agencies and has considered equipping them with “nonlethal weapons,” according to documents recently made public.

The documents, which include flight logs over the last three years, were unearthed by the Electronic Frontier Foundation through a Freedom of Information lawsuit.

Agencies that have used the 10 Predator drones owned by the Customs and Border Protection Agency have deployed them to investigate fishing violations, search for missing persons and inspect levees along the Mississippi River, among other things.

Three years ago, the drones were used by other agencies 30 times; in 2012, that jumped to 250 times. How the agency stores and shares that data with other government agencies remains unclear.