Related by context. Frequent words. (Click for all words.) 53 spy satellites 52 reconnaissance satellites 51 infra red camera 51 infra red cameras 49 reconnaissance drones 48 Thermal imaging 48 synthetic aperture radar 47 Remote sensing 47 Sniffer dogs 45 satellite imagery 45 spacecraft orbiting 45 Resourcesat 2 45 Musudan ri 45 Satellite imagery 45 slicked waters 45 spectrographs 45 satellites 45 Cosmic rays 45 radar altimeter 44 infra red 44 Sperm whales 44 sensors 44 spacecraft 44 imagers 44 Aegis radar 44 HiRISE camera 43 Migrating birds 43 radars 43 infrared cameras 43 infrared 43 MSSS operates 43 multispectral 43 TerraSAR X 43 Global Surveyor 43 Mars Reconnaissance Orbiter 43 Unmanned Aerial Vehicles UAVs 43 Unmanned aircraft 42 robotic probes 42 Cassini spacecraft 42 sensor arrays 42 reconnaissance missions 42 aerial reconnaissance 42 MODIS 42 infrared detectors 42 NASA Lunar Reconnaissance 42 armored convoys 42 reconnaissance planes 42 orbiter 42 Al Qaida operatives 42 Radars 42 NASA Aqua 42 infrared sensors 42 Thermal Imaging 42 tripod mounted 42 Accelerometers 42 expelled IAEA inspectors 42 geo referenced 42 infrared imagery 42 spotter planes 42 Ricardo Makyn Staff Photographer 42 sonars 42 GOES N 42 IKONOS 42 Chipped offAussies set 42 Undersea robots 41 Navy P 3C 41 cameras 41 interplanetary spacecraft 41 zoom lenses 41 remote sensing satellite 41 Cameras 41 navy destroyer 41 telescopic camera 41 orbiting spacecraft 41 orbiters 41 scanning electron microscopy 41 spy drones 41 VHF radios 41 Manhole covers 41 MERIS 41 migrating whales 41 downlinked 41 Mars orbiter 41 telephoto lenses 41 NASA Mars Reconnaissance 40 aerial surveillance 40 orbiting Mars 40 x ray imaging 40 EO IR 40 reconnaissance drone 40 PTZ cameras 40 thermal imagers 40 Meteorological Satellite 40 CCD camera 40 Bomb squads 40 hyperspectral 40 geostationary satellites 40 skywatchers 40 surveillance drones 40 Amateur astronomers 40 infrared telescope