Two lawmakers are questioning the privacy implications of a program that would allow unmanned aircraft to fly in U.S. airspace along with commercial airplanes. Reps. Joe Barton, R-Texas, and Edward Markey, D-Mass., recently urged the Federal Aviation Administration to consider how the drones will affect privacy. The mission of the drones is to strengthen security and assess natural disasters. "However, in addition to benefits, there is also potential for drone technology to enable invasive and pervasive surveillance without adequate privacy protections," the lawmakers wrote in a letter. "We are writing to express our concerns about the law's potential privacy implications and to requisition information about how the FAA is addressing these important matters."