An unmanned U.S. Predator drone flies over Kandahar Air Field, southern Afghanistan, on Jan. 31, 2010. U.S. drone strikes killed at least 13 people in two separate strikes Wednesday and Thursday in Pakistan's tribal area. Kirsty Wigglesworth/AP hide caption

itoggle caption Kirsty Wigglesworth/AP

A 2011 photo shows an AeroVironment Puma drone being prepared for launch by University of Alaska researchers. The FAA says it approved BP's use of the drone to survey oil fields in Alaska. Keith Cunningham/AP hide caption

itoggle caption Keith Cunningham/AP

Jeff Blank, of Los Angeles-based Drone Dudes, prepares a quadcopter for takeoff. The drone has to chase a motorcycle down a hill. Aarti Shahani/NPR hide caption

itoggle caption Aarti Shahani/NPR

In this image taken from video and released by SITE Intelligence Group, Anwar al-Awlaki speaks in a video message posted on radical websites in November, 2010. SITE Intelligence Group/AP hide caption

itoggle caption SITE Intelligence Group/AP

Drone Journalism Lab researcher Ben Kreimer is limited to testing drones indoors. Courtesy of Drone Journalism Lab hide caption

itoggle caption Courtesy of Drone Journalism Lab

A water-collecting drone hovers at a testing site in Lincoln, Neb., in 2013. The Federal Aviation Administration is working on rules for the commercial use of unmanned aircraft. Nati Harnik/AP hide caption

itoggle caption Nati Harnik/AP

In this image taken from video and released by SITE Intelligence Group, Anwar al-Awlaki speaks in a video message posted on radical websites in November, 2010. SITE Intelligence Group/AP hide caption

itoggle caption SITE Intelligence Group/AP

In an image taken of a test flight, an Amazon Prime Air drone carries a package. The online retailer could begin 30-minute deliveries within four to five years, CEO Jeff Bezos told 60 Minutes Sunday. Amazon hide caption

itoggle caption Amazon