Dave Dorsett, who spent 18 years as the primary camera operator at 'Late Show with David Letterman' passed away Friday. He was 90 years old.

SUMMERS: And, Dan Cashman, I know from being in this job ... So in the moment, I was trying to think back to when David Letterman had Johnny Carson on his show the first time.

The host of The Nite Show in Maine says it's the only locally produced late night talk show in the country. But after 15 years, he's calling it quits.