For the US it was the FAA. Each country has there own version of the FAA.
Planes were directed to land at nearby airports all over North America. When 911 happened the planes crossing to the US from Europe were forced to land in Newfoundland. The schools closed down and the people in Newfoundland were giving them food, beds, clothing, toothbrushes and what ever they needed.
Two planes hit the Twin Towers and one plane hit the Pentagon. The third plane was supposed to hit the White House where Bush was, but due to the heroic actions of the passengers, it crashed in a field in Pennsylvania, giving Bush time to get out of harms way. The rest of the planes in the air at that time were ordered to land at the nearest airport or risk being shot down. The only planes allowed to fly the rest of that day were military or Air Force 1.
Flight 93 was scheduled to go to San Francisco. All of the others were going to Los Angeles.
A float plane is a type of seaplane. Float planes land on extended floats like a normal airplanes landing gear, as opposed to boat-hulled sea planes. Float planes are usually land airplanes which have been converted to land on water, although some aircraft are specially designed for this purpose. Some aircraft like the Cessna Caravan are available in float-plane configuration straight from the factory, but most float-planes are modified land-planes. Float planes may or may not have the ability to extend wheels from their floats to land on land. It is a common feature, but not all float planes are so equipped.
Sadly, not one person was found alive in the remains of the World Trade Centre: All on the planes were killed, as were those who were still in the World Trade Centre when the planes struck.
4. 2 in the twin towers. One in the pentagon and 1 in a field in shanksville Pennsylvania They all occurred on 11th September.
A flight from London-Heathrow, UK --> LAX would take about 11 hours.
They are able to see where all the planes are. They can guide the pilots of the planes and tell them where to land and when to. They can tell them when the air is really busy, and when there is no one in the air.
Pope Urban demanded that all Christians were to reclaim the holy land from the Muslims.
Water evaporated from the ocean or land by the sun. Some vapor comes from industry and jet planes.
Andrew Jackson in 1836, It was called the Specie Circular
Actually, all of the hijackers that flew the planes on 9/11/01 were aliens. Not one of the 19 hijackers was a US citizen. They didn't come from space, they came from various other Earth countries.