Big data is increasingly being used in defense applications. The number of US Air Force unmanned aerial vehicles increased by 330% over two years, and in 2009 US UAVs alone generated 24 years worth of continuous video. The US Air Force now flies 39 orbits over Afghanistan and Iraq daily, with sensors expected to handle 50 video streams within a few years. Envitia powers over 7,000 systems worldwide and encourages registering on their website for more information on big data applications in defense.