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>> older students sing the national anthem at an outdoor rally, mixing peers and patriotism. experts say americans should expect a jump in the national anxiety level. >> they're gonna be irritable, they may be really, very acutely aware of their environment around that and any kind of threat around them. >> also tonight some of the first effects of the fear in the economic fashion, already today, there has been problem with gas gouging, prices have gone up to as >> much as $5 a gallon. tom? nbc reporting on the length and breadth of this country from chicago. the heartland of america. now we h...

Americans and francisco. all waiting for the all clear. the nation's landmarks, americas gathering spots, today abandoned as potential terrorist targets. from the seattle space needle, to disney world in the southeast, to the world's biggest shopping mall, the mall of america and minneapolis closed. and of course, at the countries tallest building, sears tower in michigan avenue in the midwest, the symbols of american life in fear. >> it's scary. your family, your way from home, the kids are at school. it's very scary. >> america hunkered down. chicago's financial district virtually empty. eve...

Postponing gains from coast to, coast. nbc's tonight show called off. and the emmy scheduled for sunday's cancel too. >> we all could see the gravity of the situation and realize that this is a true national nightmare come true. and a comedy show, a celebration would not be something that would be appropriate. >> we cannot let it happen again. >> most of the nation schools beto pin through the tragic day, students watching terrorism on their own shores for the first time. >> i just was asking myself over and over, why did that? >> teachers trying to make sense of it. >> there are other place i...

System is more than inconvenient. aviation expert mike ward. >> air transportation is part of our communications center. today it's shut down completely, people aren't moving a to be, mail isn't moving, good aren't moving. because of that we're probably going to have tens of billions of dollars hit on our economy for this. >> phone service strangled to, americas largest cell phone network with cell towers atop the world trade center destroyed, reports called nationally doubled. >> we can compare today's events to anything we have experienced before we've gone to earthquakes, significant floods...

By midday in los angeles, fbi personnel were swarming over the airport checking for possible bombs, but none were found. as a precaution, police and the fbi ordered the airport evacuated. >> we're vacuuming all terminals in stopping traffic. >> and erie scene at los angeles international tonight, the airport completely empty. and why we're all of the hijacked planes california bound? one theory is at the hijackers deliberately chose planes that would be fully loaded with fuel for a transcontinental flight. tom? >> thank you very much john lewis tonight, let's go to the reaction around the rest...