text: The September 11, 2001 attacks (often referred to as 9/11 [1]) were a series of coordinated terrorist attacks upon the United States of America carried out on Tuesday, September 11, 2001. \nThe U.S. government also initially claimed that the White House and Air Force One were also targeted, although the source and nature of these threats was not disclosed. (BBC News, September 12, 2001, [7]).to end such things, let them do what ever they want.The Executive branch consists of the President of the United States and his delegates. The President is both the head of state and head of government, as well as the commander-in-chief of the military, and the chief diplomat. The President, the Constitution says, must "take care that the laws be faithfully executed." To carry out this responsibility, he or she presides over the executive branch of the federal government, a vast organization numbering about 4 million people, including 1 million active-duty military personnel. In addition, the President has important legislative and judicial powers. Within the executive branch itself, the President has broad constitutional powers to manage national affairs and the workings of the federal government, and may issue executive orders to effect internal policies.\n\nThe President may sign or veto legislation passed by Congress. He may be impeached by a majority in the House and removed from office by a two-thirds majority in the Senate for "treason, bribery, or other high crimes and misdemeanors." The President may not dissolve Congress or call special elections, but does have the power to pardon criminals convicted of federal offences (though not crimes against a state), give executive orders, and (with the consent of the Senate) appoint Supreme Court justices and federal judges.\nThe National Security Agency / Central Security Service (NSA/CSS) is believed to be the largest United States government intelligence agency. It is responsible for the collection and analysis of foreign communications and for the security of U.S. government communications against similar agencies elsewhere. Officially established November 04, 1952, the NSA is a component of the Department of Defense and has always been directed by a three-star flag or general officer. NSA is a key component of the United States Intelligence Community headed by the Director of National Intelligence.\n\nIts eavesdropping mission includes radio broadcasting, both from various organizations and individuals, the Internet, and other intercepted forms of communication, especially confidential communications. Its secure communications mission includes military, diplomatic, and all other sensitive, confidential or secret government communications. Despite having been described as the world's largest single employer of mathematicians [1], the owner of the single largest group of supercomputers, and having a budget much larger than that of the CIA [citation needed], it has had a remarkably low profile until the break of the 21st century. For a long time its existence was not even acknowledged by the U.S. government. It was often said, half-jokingly, that "NSA" stood for "No Such Agency".