6:45 PM UPDATE: The missing man’s son says he’s been found.

EARLIER: Just out of the WSB inbox (update: photo added):

My father, John Knapp, Sr., has not been heard from since around noon today when he left an appointment at Westside Dermatology at the Junction. He is 73 and has a serious heart condition, so is wearing a defibrillator vest. He is 5’11”, white, 212 pounds, and has short gray hair. He was driving a beige 1999 Toyota Corolla with Washington plate number 792-VXC. I have put a report into 911 and SPD was to send an officer, but it has been an hour. He lives on Genesee Hill so he cannot be far from home.

Please call 911 if you think you have seen him.