A little update:
Upon further review, Google says it didn't happen just that way.
The Dalles Chronicle is skeptical of the claim, according to Informationweek, which reports that Google now says hunters aren't a problem.
...according to a Google spokesperson, the company is aware of a single incident involving a hunter and cables at one of its many data centers around the world. What Gill was trying to convey at the conference was the risk that any exposed cable faces from a variety of threats. He wasn't attempting to describe The Dalles as a war zone.
"We use a variety of technologies to interconnect our datacenters, including above-ground, below-ground, and undersea fiber optic cables," a Google spokesperson said in an e-mailed statement. "Each are subject to different failure modes, and because of our large network volume we regularly see events which are, on an absolute scale, still quite rare -- including hunting, flooding, fire, road construction and even once a cow funeral. To ensure that these events don't impact our users and our operations, we have redundant connectivity with multiple diverse fiber paths to all of our important locations."