The shuttle's redesigned rockets dropped off into the Atlantic Ocean on schedule and on target 160 miles from Cape Canaveral. "Everything appeared to be normal. There appeared to be no external leakage or anything like that," said Jim Thomas of the Marshall Flight Center. "Splashdown was 8 miles from the recovery ships. Above the waterline, they looked very good," said Rocky Raab, spokesman for Morton Thiokol Inc., whose Brigham City, Utah, plant manufactures the boosters.