radio-optical line of sight

optical sight

line-of-sight radio-relay system

beyond radio line of sight

electronic countermeasure-resistant digital line-of-sight radio

line-of-sight microwave radio relay system

line-of-sight radio relay link

radio line of sight

deployment line; line of deployment (LD); line of departure

front sight (fore / muzzle sight)

sight, to take a (careful) sight

day-sight (day sight)

modular integrated display and sight helmet (Modular Integrated Display-And-Sight Helmet)

electro-optical countermeasures

electro-optical sensor

electro-optical system

optical decoy

optical device

optical electronic countermeasures

optical flash

optical gas mask

optical homing

optical intelligence

optical mine-hunting

optical munitions

optical range

optical relay

optical target-sensor

optical tracking

artillery optical reconnaissance

electro-optical warfare system

helmet-mounted optical display

optimized optical link helmet-mounted display