How were people warned that the bombing was about to start?

What are facts about Pierre G T Beauregard? In world war one Germany's primary tool for choking England's import economy was? Why did bonifacio decide to organize the katipunan? Which term describes no-mans land? Which group took over the Russian govertment in 1917? Why was the battle of Hampton roads significant? What is the name of a small and high pitched musical instrument similar to piccolo played with drums during the civil war? Which European country colonised Vietnam? How many Fleet Admirals has the Navy had and who were they? What does AAF stand for? How many soldiers were in the us military during World War 2? What statement best describes the impact of century conflicts such as World War 1 and World War 2? How did industrialization cause the US to become more involved in world affairs? What was the closest major city to the Battle of Shiloh? Why is the United states could of stayed out of world war 2? Why did kings give land to knights and lords? Where is the East Tennessee Civil War Campaigns in Greeneville Tennessee located? What were the soldiers trying to accomplish on d day? What are the names of past Congressional Chaplains? What branch provides timely early warning of a missile attack?