"At 162 feet long, this rocket, the Soyuz-FG, is noticeably smaller than the assembled space shuttle, but it's still a daunting colossus, a building-size object that will, we hope, leave the ground, with us riding on top of it, at twenty-five times the speed of sound. Its navy gray sheet metal, adorned with low-tech rivets, is unbeautiful but somehow comforting in its utility. The Soyuz-FG is the grandchild of the Soviet R-7, the world's first intercontinental ballistic missile. The R-7 was designed during the Cold War for launching nuclear weapons at American targets, and I can't help remembering how as a child I was aware that New York City, and my suburb of West Orange, New Jersey, would have certainly been among the first targets to be instantly vaporized by a Soviet attack. Today, I'm standing inside their formerly secret facility, discussing with two Russians our plans to trust one another with our lives while riding to space on this converted weapon. Gennady, Misha and I all served in our militaries before being chosen to fly in space, and though it's something we never talk about, we all know we could have been ordered to kill one another. Now we are taking part in the largest peaceful international collaboration in history. When people ask whether the space station is worth the expense, this is something I always point out. What is it worth to see two former bitter enemies transform their weapons into transport for exploration and the pursuit of scientific knowledge? . . . This is impossible to put a dollar figure on, but to me it's one of the things that makes this project worth the expense, even worth risking our lives."