Saving the planet is a tough job, even for the rare Sierra Clubber for whom money is no object.

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Sergeant MARIA(ph): We got the security team that - they do their job and they clear the area, but there always, you know, there might be that one object on the road that they just bypass and miss, and we might be the one that hit it.

NPR: U.S. Troops in Iraq Include 10,000 Mothers