"It's a very serious threat, " says Jeffrey Williams, an IETF member and a spokesman for INEGroup, which represents 98, 000 domain-name holders.

CNN: Is domain name system vulnerable to slamming?

"We have salvageable patients we are going to lose because we can't get these people out of here, " said Dr. Jeffrey Williams, who is works in the intensive care unit.

CNN: Mayhem hampering hospital evacuations

He said earlier "factual disputes" between Trooper Williams and his colleague Cpl Jeffrey Blair were no longer viewed as important.

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