You are kidding me. I read Patterson's first book.
Patterson continues with more of what Cranmer told him about that trip--he was flying Kerry and some of Kerry's staff to places in Cambodia and Vietnam during the POW/MIA discussions. Right after the "I never sail on anything less than 135 feet" comment, he says:
Their first stop was Phnom Penh, Cambodia, where Kerry's party was to have lunch with members of the Cambodian government. The crew, meanwhile, had brought along a pizza, purchased at the Kadena Air Base exchange, and stowed it on board for their only meal of what was to be a very long day. Amazingly, without asking, Kerry grabbed the pizza and started passing it around to his party, while the pilots flew their aircraft.