Top N.Y.P.D. Officials Have Tense Public Argument at Marathon NYT | Top Stories Maria Cramer and Lola Fadulu 5 November 2024 at 04:47 Commissioner Thomas Donlon and his acting chief of staff, Tarik Sheppard, had to be separated by another official, said people familiar with the dispute. © ULI SEIT for The New York TimesThomas Donlon, the interim police commissioner, has made himself a presence anywhere the department is devoting resources.