Terrorist Attacks..

There are terrorist attacks in our country. One example is 9/11, when a plane was crashed into the Twin Towers. I don't know many details about this attack, sadly. Our country is trying to protect itself from another attack like that by raising security at Airports. I haven't been to an Airport in a long time, so I wouldn't know what exactly they're doing to people to see if they have anything that could be dangerous.