The U.S. is weighing whether to try to shoot down any missiles fired by North Korea in their test of Taepondong rockets they claim are capable of reaching the west coast of the United States. And we're especially worried because the North Koreans have been busily developing their nuclear technology while we've been waging our War on Terror in Baghdad and environs (where there were no nukes or missiles with nukes).
It looks like the North Koreans are serious. According to the Guardian, "North Korean officials today insisted they had the right to carry out the test after US spy satellite images apparently identified a missile being fuelled up. The corrosive nature of rocket fuel means missiles have to be fired within five to 10 days."
Even if the U.S. wanted to try to shoot down a North Korean test missile, it's unlikely that we'd be able to. As everyone knows, the roughly $91 billion dollars the Pentagon has spent on a missile defense system has been largely a bust, providing us with really expensive space-age stuff incapable of shooting down anything.