Tuesday, September 11, 2001, dawned temperate and nearly cloudless in the eastern United States. Millions of men and women readied themselves for work. Some made their way to the Twin Towers, the signature structures of the World Trade Center complex in New York City. Others went to Arlington, Virginia, to the Pentagon. Across the Potomac River, the United States Congress was back in session. At the other end of Pennsylvania Avenue, people began to line up for a White House tour. In Sarasota, Florida, President George W. Bush went for an early morning run. For those heading to an airport, weather conditions could not have been better for a safe and pleasant journey. Among the travelers were Mohamed Atta and Abdul Aziz al Omari, who arrived at the airport in Portland, Maine. Boston: American 11 and United 175. Atta and Omari boarded a 6:00 A.M. flight from Portland to Boston's Logan International Airport. When he checked in for his flight to Boston, Atta was selected by a computerized prescreening system known as CAPPS (Computer Assisted Passenger Prescreening System), created to identify passengers who should be subject to special security measures. Under security rules in place at the time, the only consequence of Atta's selection by CAPPS was that his checked bags were held off the plane until it was confirmed that he had boarded the aircraft. This did not hinder Atta's plans. Atta and Omari arrived in Boston at 6:45. Seven minutes later, Atta apparently took a call from Marwan al Shehhi, a longtime colleague who was at another terminal at Logan Airport. They spoke for three minutes. It would be their final conversation.

What flight was Mohmad Atta on when chosen by CAPPS system?

The family across the street has a cat. He is a cute black kitty named Dillon. The cat is about two years old, and the family has had him for about a year. He is an indoor cat who is not allowed to go outside. The children like to play with Dillon because he still acts like a kitten. Dillon jumps around, and chases flies, beetles and spiders. When he plays with the children, he sometimes uses his paws to attack them, but he doesn't try to hurt them with his claws. Dillon is a great cat but he has one problem: he likes to eat bread. The family only feeds him cat food, never human food like steak or potatoes. But the cat likes the smell of bread so much that he tries to find it everywhere he can. Dillon jumps up on the kitchen table when a sandwich is there, and tries to carry it away. He finds loaves of bread from the store on the floor and claws through the wrappers. The cat climbs into the bread cupboard looking for hot dog and hamburger buns. The family tries to make Dillon stop getting into the bread by spraying him with water when he goes after bread. They yell at him when he walks on the table. But Dillon does not listen. The kitty keeps trying to find bread to eat. The family thinks that the man who took care of Dillon when he was a very young kitten must have been a baker or cook, and that's why Dillon likes the smell and taste of bread so much!

Does Dillon like to chase insects inside?

How can you describe your location? You might use a familiar system. You might say, 'I live at 1234 Main Street, Springfield, Ohio.' You could also say, 'I live right behind the Elementary School.' This method uses the school as a point of reference. Another example is, I am at the corner of Maple Street and Main Street. Both streets may be a good reference for anyone living in your town. Scientists must be able to pinpoint a feature they are studying. Scientists use a special system to describe locations. They use latitude and longitude as a reference. Lines of latitude and longitude form a grid. You may have used a grid system while doing graphing. This grid is centered on a reference point. Zero latitude is the equator. Lines of latitude run east to west. They divide the Earth from North to South. Lines of longitude run from north to south. They divide the Earth from East to West. Zero longitude runs through Greenwich, England. You may have heard the term, Greenwich Mean Time, or GMT. The system of latitude and longitude works well for objects that do not move.
What two major ways do scientist divide the Earth to pinpoint location?