David Hume Kennerly got interested in photography when he realized he could get out of class if he took photos for the yearbook. Says Kennerly, "I pawned myself off as a photographer with a lot more experience." After 30 years of documenting history for a living, he doesn't need to fool anyone. Kennerly won a Pulitzer Prize in 1972 for his work in Vietnam. He served as White House photographer to Gerald Ford and has traveled on assignment to more than 140 countries.