NEW : U.S. asks China to provide information so `` countries can take precautions '' Navy gunners had just a 10-second window to fire , and officials had said they might not be able to take their shot on the first opportunity . Copyright 2008 : Most debris will burn up on re-entry within 40 days . The remaining debris should re-enter the atmosphere within 40 days . Pentagon wo n't know for certain for morning whether fuel tank was hit .
NEW : U.S. asks China to provide information so `` countries can take precautions '' Copyright 2008 : Most debris will burn up on re-entry within 40 days . The remaining debris should re-enter the atmosphere within 40 days . Pentagon wo n't know for certain for morning whether fuel tank was hit .