U.S. and coalition forces, however, go to far greater lengths to prevent civilian casualties than the Afghan government often suggests. Rules of engagement are reviewed and refined regularly for this very purpose. Procedures for delivering ordnance are tightly controlled and closely supervised. Operational planning is done in coordination with Afghan government, military and police officials. In some cases, local civilians are even notified of planned operations in advance. On top of that, U.S. and coalition troops often opt not to return Taliban fire when civilians are nearby, even if it means putting their own lives at risk.