May 1, 2019 Aerospace & Defense Technology - May 2019 Here are links to this issue's Features, Tech Briefs, Products and more. You can download the complete issue, LOGIN TO DOWNLOAD Don't have an account? Sign up here. Subscribe to future issues. SUBSCRIBE Inside this issue Features Feature Articles Underwater Drone Technology Eyes In the Sky Hydraulic Cylinder Position Sensor Technology The CAN Bus: Driving the Future of Autonomous Military Vehicles Autonomous “Wingman” Vehicles Products New Products: May 2019 Aerospace & Defense Technology Application Briefs UAV Ground Control Station Surface to Surface Missile Vehicle Active Protection System Intelligent Parachute Rescue System Lithium-Ion Batteries Parcel Delivery Drone Tech Briefs Aerospace Geospatial Accuracy of Small Unmanned Airborne System Data in the Coastal Environment Developing Knowledge and Understanding for Autonomous Systems for Analysis and Assessment Events and Campaigns Monitoring a Nearshore Beneficial Use Site: Application of a Benthic Sled and Video Annotation Sound Attenuation of Neoprene Wetsuit Hoods as a Function of Dive Depth and Acoustic Frequency: Hyperbaric Chamber Trials Localization and Mapping of Unknown Locations with Unmanned Ground Vehicles View the discussion thread.