Assertion: gun's fire | /r/HasProperty | arrangement
Facets:
Source sentences:
text: Mortars are also highly effective when used from concealed positions, such as the natural escarpments on hillsides or from woods, especially if forward observers (FOs) are being employed in strategic positions to direct fire, an arrangement where the mortar is in relatively close proximity both to its FO and its target, allowing for fire to be quickly and accurately delivered to lethal effect.