For music photographer Paul Natkin, one of the most memorable moments of his career arrived out of the blue in 1989 when he was tapped to be the tour photographer for the Rolling Stones&amp;rsquo; Steel Wheels tour. What started with a 1988 freelance assignment photographing Keith Richards turned into more than three months on the road shooting the world&amp;rsquo;s most famous band with a front row seat witnessing rock-and-roll in the fast lane.