This sequel to X X X (2002) brings back Samuel L. Jackson as a U.S. intelligence chief, though Ice Cube replaces Vin Diesel as the ex-con action hero. This time the skulduggery involves Willem Dafoe as the U.S. secretary of defense, who’s planning to assassinate his way to the presidency, but with more stuntpeople than characters, this borders on a free-for-all. Of course the movie’s real raison d’etre is watching Ice Cube tear up government facilities and blockades with a tank, spout Schwarzenegger-style kiss-off lines, and commandeer the kind of babes and high-tech cars that James Bond usually plays with. The silly script is by Simon Kinberg, the spotty direction by Lee Tamahori. PG-13, 101 min. (JR)