Assertion: artillery's gun | /r/CapableOf | use observation
Facets:
value: by opto-electronic devices
type: OTHER
value: by human observers
type: OTHER
Source sentences:
text: This includes radars tracking the shells in flight to determine their place of origin, sound ranging detecting guns firing and resecting their position from pairs of microphones or cross-observation of gun flashes using observation by human observers or opto-electronic devices, although the widespread adoption of 'flashless' propellant limited the effectiveness of the latter.