Video showing the smoke trail left after a U.S. Global Hawk unmanned aerial vehicle was shot down over the.
New Navy Sonar to Defeat Dangers in Sea
The Airborne Low Frequency Sonar is often the U.S. Navy's first line of defense against the threat of enemy submarines. The system provides critical undersea warfare mission support capabilities, including submarine detection, tracking, acoustic intercept, underwater communication and environmental data collection. Learn more: http://www.raytheon.com/capabilities/products/alfs/