NEW ORLEANS (AP).- Bombers and torpedo planes will be the stars of the latest expansion of the National World War II Museum, and visitors will be able to get close-up views of the war planes on elevated catwalks. Construction of the new $35 million exhibit will be formally announced Friday. One of Boeing Co.’s most famous World War II aircraft, the B-17G Flying Fortress heavy bomber, will be a centerpiece of the new exhibit. The B-17G is recognizable by the nose turret designed to defend against oncoming attacks by fighter aircraft. “When you watch some of the old movies of bombing runs, its the plane you see,” said Boeing historian Mike Lombardi said. The B-17 that has gained enduring fame, in part because it was a primary weapon in U.S. strategic bombing against Germany and because it was featured in the 1949 movie and 1960s television series “12 O’Clock High.” The new museum wing will be called the U.S. Freedom Pav