For U.S. Military Drones, Airspace Is Growing More Congested, Dangerous Wall Street Journal
Unmanned U.S. surveillance aircraft, with their suites of advanced technology, are the high-price product of years of domestic drone development during an era …
http://www.dronestagr.am/blog/for-u-s-military-drones-airspace-is-growing-more-congested-dangerous-wall-street-journal/