Tom Brokaw Rappels Down Utah Crevasse with Aron on Friday's Dateline

At 64, Brokaw is the youngest among the gray anchor elite that includes Dan Rather, 72, and Peter Jennings, 66 - what he jokingly calls the "three aging white men who are still living."

Yet Brokaw's hardly ready for total retirement.

Indeed, in a report Friday on "NBC Dateline," Brokaw follows Aron Ralston into the Utah canyon where the climber cut off his own arm to escape entrapment and death. As Ralston climbs down a crevasse or rappels 60 feet to a canyon floor in the report, Brokaw is right behind him.

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