Edward Hopper's "Nighthawks" (WWII)

Reading up on Edward Hopper's "Nighthawks", I learned some new things about this famous painting. The painting shows people sitting in a diner in Manhattan late at night. Hopper painted this very soon after the attack on Pearl Harbor on December 7, 1941. The painting is meant to illustrate the overall gloominess the country was in after the attack on World War II. It was a time when people were afraid to leave their homes. This made me think of the attacks on the World Trade Centers on September 11, 2001. People were afraid, depressed and unsure of what the future held. In the 1940's people knew this attack would launch them into the war in Europe and they were afraid of what that would bring. With news coming in about what was happening to other nations in Europe and already being attacked at home, people were scared that it could happen again. When would the attack come? Would it happen on the mainland this time? Would New York, Chicago, Washington or LA be next? Or would small towns and military bases be the next places to be attacked. What was coming next?