Several commentators have noted that McCain appeared to have much more energy than his younger rival during the Saddleback Forum. McCain gets his stamina honestly. It’s impossible to read a history of WWII in the Pacific without coming across multiple references to his grandfather, Admiral John “Slew” McCain, and his legendary work ethic. Biographies of Admirals King, Nimitz and Halsey reference the near awe in which their subjects held the elder McCain’s drive (and it was quite a feat for the acerbic King to be impressed by anybody or anything). Heck, even McCain’s nonagenarian mother seems more energetic than Obama, who occasionally has attributed his gaffes to lack of sleep.