Photographer Joe McNally visits Google's Mountain View, CA headquarters to discuss his book "The Moment It Clicks." McNally is an internationally acclaimed photographer, whose career has spanned 30 years and included assignments in over 50 countries. Although the majority of his career has been spent shooting for magazines such as Time, Sports Illustrated, and National Geographic, in the mid-1990s Joe served as Life magazine's staff photographer, the first one in 23 years. He also has shot commercial assignments for Target, Nikon, and Sony, to name a few.