Alice Beauheim, her father and Bill Love fly their homemade machines at the Drone Smackdown in Manassas, Va., on Sunday. Objections by the Federal Aviation Administration forced organizers to hold the tongue-in-cheek contest outside of Washington, D.C. John Procter hide caption

itoggle caption John Procter

An unmanned U.S. Predator drone flies over Kandahar Air Field in Afghanistan in 2010. Apple has rejected an app that tracks U.S. drone strikes around the world. Kirsty Wigglesworth/AP hide caption

itoggle caption Kirsty Wigglesworth/AP

Brian Bills, a flight operations analyst for Lockheed Martin, demonstrates the Procerus VTOL (vertical takeoff and landing) Flight System — a surveillance drone for commercial, civil and military customers — at the Association of Unmanned Vehicle Systems International conference in Las Vegas. (Watch a demo video.) Kainaz Amaria/NPR hide caption

itoggle caption Kainaz Amaria/NPR

Some of the computers controlling America's fleet of drone aircraft are reportedly infected by a persistent virus. In this file photo, a senior airman remotely operates an MQ-9 Reaper during a training mission at Creech Air Force Base in Indian Springs, Nev.

Ethan Miller/Getty Images hide caption

itoggle caption Ethan Miller/Getty Images