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![2166911.png](https://photos.usni.org/sites/default/files/imagecache/Photo_Full/usni_photo_gallery/tn_2166911.png)
The right door gunner of a Navy armed gunship prepared for a firing run over a Viet Cong ambush site in the Mekong Delta. The helicopter was answering a distress call from the burning river patrol boat (PBR) which had been hit by recoilless rifle fire m