noun-modifying (irregular)
heliborne
Military and technical term for operations, assaults, or troops transported by helicopter. Used prenominally in Japanese.
ヘリボーン作戦が夜明けに開始された。
The heliborne operation was launched at dawn.
ヘリボーン部隊が敵陣の背後に降下した。
The heliborne unit descended behind enemy lines.