Boston March 29, 2018 6:33 pm Boston Officer Donates Time Teaching Tennis to Seniors Boston Police Officer Frank Williams is helping senior citizens learn to play at the Dorchester Sportsman’s Tennis Club. US & World Videos 4:02 ‘To Catch a Contractor' series leading to changes 1:02 20% of nurses to leave field within 2 years 6:03 Tensions rise during campus protests at MIT and Harvard 1:05 Marking construction safety week in Boston 20:19 Karen Read's attorney accuses witness of perjury at murder trial