I changed the headline from the NYT report
Mr. Comey learned from news reports that he had been fired while addressing bureau employees in Los Angeles. While Mr. Comey spoke, television screens in the background began flashing the news. In response to the reports, Mr. Comey laughed, saying that he thought it was a fairly funny prank. Shortly after, Mr. Trump’s letter was delivered to F.B.I. Headquarters in Washington.