July Fourth Box Office: Few Fireworks Expected as 'BFG,' 'Tarzan' Track Poorly

Call it 'The Purge: Multiplexes' as the usual box-office behemoths are AWOL in the key period between June 24 and the holiday, and wannabes go soft in early tracking. Says analyst Paul Dergarabedian: "This year looks a bit different than in the past."