Assertion: attack helicopter | /r/HasProperty | repurposed for an air observation post
Facets:
value: often
type: TEMPORAL
value: for directing artillery fire
type: PURPOSE
Source sentences:
text: As the Gazelle became progressively older, newer combat helicopters were brought into service in the anti-tank role; thus those aircraft previously configured as attack helicopters were often repurposed for other, secondary support duties, such as an Air Observation Post (AOP) for directing artillery fire, airborne forward air controller (ABFAC) to direct ground-attack aircraft, casualty evacuation, liaison, and communications relay missions.