Related by context. Frequent words. (Click for all words.) 67 lasers 60 laser 56 laser beams 51 laser beam 48 tracer bullets 48 infrared 48 searchlights 47 infra red 47 cockpits 46 muzzle flashes 46 strobes 45 femtosecond laser 45 illuminators 45 tracers 45 infrared laser 44 periscopes 44 Flashing lights 44 airplanes 44 tracer rounds 43 infrared imaging 43 thermal imaging 43 night vision goggles 43 strobe lights 43 holographic images 42 Laser 42 excimer laser 42 infrared sensors 42 spy drones 41 radars 41 Infrared 41 planes 41 LEDs light emitting 41 particle beam 41 sonars 41 detectors 40 infrared cameras 40 blinking lights 40 flares 40 lights 40 halogen lights 40 infrared detectors 40 imagers 40 Infra Red 40 infrared IR 40 x ray imaging 39 Thermal imaging 39 reconnaissance satellites 39 florescent 39 satellites orbiting 39 Unmanned aircraft 39 cameras 39 beams 39 X ray 39 illuminated 39 unmanned drones 39 microdisplays 39 radiation detector 39 strobe light 39 fluorescent light 39 reflectors 39 temporarily blinded 39 periscope 39 illumination 39 LED lights 39 CT scanners 39 light emitting diodes LEDs 39 lighted 38 scopes 38 electro optic 38 strobing 38 surveillance drones 38 flashing lights 38 reflective surfaces 38 synthetic aperture radar 38 radar 38 monocular 38 scanners 38 ultraviolet 38 gunsights 38 imaging 38 flying saucers 38 auroral 38 unmanned aerial vehicles 38 PET scanners 38 holograms 38 X ray scanners 38 fluorescent 38 light emitting diodes 38 infrared beam 38 glow 38 Unmanned Aerial Vehicles 38 stealth bombers 38 laser diodes 38 electroluminescent 38 flashlights 38 blinding flash 38 laser pulses 38 spectrometers 37 sky 37 strobe 37 magnifiers