http://www.aero-news.net/index.cfm?do=main.textpost&id=07d6162d-f49b-4d00-8885-bba56267ceab
A report released by the U.S. Marine Corps indicates that civilian contractors employed by Lockheed Martin remotely piloting a K-Max unmanned helicopter in Afghanistan June 5, 2013 lost control of the aircraft because it had been programmed to anticipate a 15 mph headwind at its dropoff point, and encountered a tailwind instead.