The B-1B is one of the most advanced bombers in the world. But it is on the sidelines in the war against Iraq.

The planes were grounded for a month by engine problems, and the Air Force says they are being fixed. A B-1B could dump nearly 100 500-pound bombs on Saddam Hussein's army, twice the load of the B-52s now bombing Iraq.The U.S. Strategic Air Command insists the B-52 is best suited for the Gulf War because the B-1B was built to deliver nuclear warheads, not conventional payloads.

The Air Force could use both bombers, but says it has no plans to do so.