US Air Force MASTER Sergeant Rod Alne (left) and STAFF Sergeant Tony Alexander run the rapids on the Green River in Washington to prepare for the Eco-Challenge. From the March 2000 AIRMAN Magazine article "Expeditionary Force?". State: New Hampshire (NH) Country: United States Of America (USA)

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Photo credit: © NB/ROD / Alamy / Afripics
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Keywords: df-sd-02-01878