We've grown used to a presidential visit closing aviation facilities but the effect is usually temporary. Las Cruces (New Mexico) International Airport closed one of its three runways indefinitely after George W. Bush's entourage left an indelible mark. A C-17 accompanying Air Force One created ruts more than 2,500 feet long when it backed up to get in position for takeoff there last Thursday. Damage is estimated at $1 million. (Oops.) Airport Manager Theresa Cook told AVweb that the president's travel team was warned that the asphalt runway (in the middle of a Southwest summer day) might not handle the...