McCain Ready to Serve as Septuagenarian

ABC News’ Lindsay Hamilton reports: After his defeat in the 2000 presidential primaries, Sen. John McCain, R-Ariz., speculated that by 2008 his age would prevent him from another run for the White House. But, in an interview with NBC’s Tim Russert, McCain said he is healthy enough to hike the Grand Canyon "from rim to rim" and the most prepared candidate in the race.

"My energy level is great," said McCain, who, at 72 in 2008, would be the oldest president elected to a first term. "I work 24/7. I’m pleased that I am in excellent health, and I believe that I may not be the youngest candidate in this race, but I’m certainly the most prepared."