Are we safe???

Are we experience act of terrorism in the next few weeks??? While i was watching news i saw this interesting news. Americans have this fear we are going to be in terrorist attacks in the following weeks. According to {CNN} 49 % of American people answer yes  we are experience terrorism in the following weeks. In the other hand 48% said no. The CIA director Michael Hayden was surprised  for what Americans had said.In the interview with  CNN he was suprise for the high numbers of Americans said we expecting attacks. He said America has been very a high security system right now and he does not see this happening right now. Why people American people think we are going to have terrorist attacks???

Are we going to experience another terrorist attack just like 9/11 or worst are we prepared for this??