answers: cathy lanier 10 years
questions: who is retiring as chief of police? how long did lanier serve as chief of police?
paragraph: After 26 yrs with MPD, the last 10 as Chief of Police, Cathy Lanier announces her retirement effective next month DC Police Department (@DCPoliceDept) August 16, 2016
questions_answers: question: who is retiring as chief of police?, answer: cathy lanier | question: how long did lanier serve as chief of police?, answer: 10 years