That hasn't happened for at least three years, although he does appear in public on occasion.

CNN: Tape shows Saddam working a crowd

Law enforcement investigations of these matters have, on occasion, resulted in public embarrassment.

FORBES: The Growing Scrutiny of Pensions ( August 22, 2005)

Or maybe the chief justice just handed us an occasion to dramatize this debate in the biggest possible public forum: the general election for the presidency.

FORBES: The Roberts' Supreme Court Decision Promises That We WILL Get Fooled Again

That measure marked a rare occasion in which the tax extenders were voted on in public by the committee, congressional aides in both parties said.

WSJ: Breaks for Specific Industries Survive in Cliff Deal

The death of Princess Diana in 1997 was even an occasion where the scale and intensity of public grief not only caught UK officials by surprise - but threatened to turn Britons against the Royal Family for their perceived remoteness.

BBC: What is 'national mourning' for?