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Puffer Machine
An explosives trace-detection portal machine, also known as a trace portal machine and commonly known as a puffer machine, is a security device that seeks to detect explosives and illegal drugs at airports and other sensitive facilities as a part of airport security screening. The machines are intended as a secondary screening device, used as a complement to, rather than a substitute for, traditional X-ray machines. The term "trace-detection" refers to the machine's ability to detect extremely small "traces" of these compounds. The exact sensitivities of these machines are not published, but a mass spectrometer detects compounds on a molecular level and would only be limited by the efficiency of the collection from the air puffed to obtain a sample for analysis. Available models and technologies Entry Scan, developed by General Electric, and Ionscan Sentinel II, developed by Smiths Detection, use ion mobility spectrometry (IMS) technology and can detect explosives such as RDX ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Explosives
An explosive (or explosive material) is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure. An explosive charge is a measured quantity of explosive material, which may either be composed solely of one ingredient or be a mixture containing at least two substances. The potential energy stored in an explosive material may, for example, be: * chemical energy, such as nitroglycerin or Dust explosion, grain dust * pressure, pressurized gas compressor, gas, such as a gas cylinder, aerosol can, or boiling liquid expanding vapor explosion * nuclear weapon, nuclear energy, such as in the fissile isotopes uranium-235 and plutonium-239 Explosive materials may be categorized by the speed at which they expand. Materials that detonate (the front of the chemical reaction moves faster through the material than the speed of sound) are said to be "high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CN Tower
The CN Tower () is a communications and observation tower in Toronto, Ontario, Canada. Completed in 1976, it is located in downtown Toronto, built on the former Railway Lands. Its name "CN" referred to Canadian National, the railway company that built the tower. Following the railway's decision to divest non-core freight railway assets prior to the company's privatization in 1995, it transferred the tower to the Canada Lands Company, a federal Crown corporation responsible for the government's real estate portfolio. The CN Tower held the record for the world's tallest free-standing structure for 32 years, from 1975 until 2007, when it was surpassed by the Burj Khalifa, and was the world's tallest tower until 2009 when it was surpassed by the Canton Tower. It is currently the tenth-tallest free-standing structure in the world and remains the tallest free-standing structure on land in the Western Hemisphere. In 1995, the CN Tower was declared one of the modern Seven W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allenby Bridge
The Allenby Bridge (), known officially in Jordan as the King Hussein Bridge (), is a bridge that crosses the Jordan River near the city of Jericho in the Israeli-occupied West Bank and the town of Al-Karameh in Jordan. The bridge is currently the only official border crossing between the West Bank and Jordan, and is the sole designated exit/entry point for West Bank Palestinians travelling abroad by land. Being below sea level, it is the lowest fixed water crossing in the world. Etymology The bridge is informally called the Bridge () or simply (, ) by Palestinians. History In 1885 the Ottoman government of the Mutasarrifate of Jerusalem built a bridge at this site. In 1918 British general Edmund Allenby built a bridge over the remnant of the Ottoman predecessor. The 1922 census lists 12 people (8 Christians and 4 Muslims) living at the bridge. It was first destroyed by the 1927 Jericho earthquake, when it fell apart and collapsed into the river. The 1931 census lists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Israeli Border Police
The Israel Border Police () is the gendarmerie and border security branch of the Israel National Police. It is also commonly known by its Hebrew abbreviation Magav (), meaning border guard; its members are colloquially known as ''magavnikim'' (; singular ''magavnik''). "Border Guard" is often used as the official name of the Israel Border Police in English. While its main task is securing Israel's borders, it has also been deployed to assist the Israel Defense Forces, and for counter-terrorism and law enforcement operations in the Israeli-occupied West Bank and in Jerusalem. The Israeli Border Police is known to include many soldiers from minority backgrounds, being a particularly popular choice for Druze recruits, and also including many soldiers from Circassian, Arab Christian, and Bedouin backgrounds.Arab-Israeli Military Forces in an Era of Asymmetric Wars, Anthony H. Cordesman, Greenwood Publishing Group, 1 January 2006, page 133 History The Border Police was founded ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
September 11 Attacks
The September 11 attacks, also known as 9/11, were four coordinated Islamist terrorist suicide attacks by al-Qaeda against the United States in 2001. Nineteen terrorists hijacked four commercial airliners, crashing the first two into the Twin Towers of the World Trade Center in New York City and the third into the Pentagon (headquarters of the U.S. Department of Defense) in Arlington County, Virginia. The fourth plane crashed in a rural Pennsylvania field during a passenger revolt. The attacks killed 2,977 people, making it the deadliest terrorist attack in history. In response to the attacks, the United States waged the global war on terror over multiple decades to eliminate hostile groups deemed terrorist organizations, as well as the foreign governments purported to support them. Ringleader Mohamed Atta flew American Airlines Flight 11 into the North Tower of the World Trade Center complex at 8:46 a.m. Seventeen minutes later at 9:03 a.m., United Airlines Flig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Statue Of Liberty
The Statue of Liberty (''Liberty Enlightening the World''; ) is a colossal neoclassical sculpture on Liberty Island in New York Harbor, within New York City. The copper-clad statue, a gift to the United States from the people of French Third Republic, France, was designed by French sculptor Frédéric Auguste Bartholdi and its metal framework was built by Gustave Eiffel. The statue was dedicated on October 28, 1886. The statue is a figure of a classically draped woman, likely inspired by the Roman Liberty (personification), goddess of liberty, Libertas. In a contrapposto pose, she holds a torch above her head with her right hand, and in her left hand carries a ''tabula ansata'' inscribed JULY IV MDCCLXXVI (July 4, 1776, in Roman numerals), the date of the U.S. Declaration of Independence. With her left foot she steps on a broken chain and shackle, commemorating the End of slavery in the United States, national abolition of slavery following the American Civil War. After its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Backscatter X-ray
Backscatter X-ray is an advanced X-ray imaging technology. Traditional X-ray machines detect hard and soft materials by the variation in x-ray intensity transmitted through the target. In contrast, backscatter X-ray detects the radiation that reflects from the target. It has potential applications where less-destructive examination is required, and can operate even if only one side of the target is available for examination. The technology is one of two types of whole-body imaging technologies that have been used to perform full-body scans of airline passengers to detect hidden weapons, tools, liquids, narcotics, currency, and other contraband. A competing technology is millimeter wave scanner. One can refer to an airport security machine of this type as a "body scanner", "whole body imager (WBI)", "security scanner" or "naked scanner". Deployments at airports In the United States, the FAA Modernization and Reform Act of 2012 required that all full-body scanners operated in ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Millimeter Wave Scanner
A millimeter wave scanner is a whole-body imaging device used for detecting objects concealed underneath a person’s clothing using a form of electromagnetic radiation. Typical uses for this technology include detection of items for commercial loss prevention, smuggling, and screening for weapons at government buildings and airport security checkpoints. It is one of the common technologies of full body scanner used for body imaging; a competing technology is backscatter X-ray. Millimeter wave scanners come in two varieties: active and passive. Active scanners direct millimeter wave energy at the subject and then interpret the reflected energy. Passive systems create images using only ambient radiation and radiation emitted from the human body or objects. Technical details In active scanners, the millimeter wave (a type of microwave) is transmitted from two antennas simultaneously as they rotate around the body. The wave energy reflected back from the body or other objects o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USA Today
''USA Today'' (often stylized in all caps) is an American daily middle-market newspaper and news broadcasting company. Founded by Al Neuharth in 1980 and launched on September 14, 1982, the newspaper operates from Gannett's corporate headquarters in New York City. Its newspaper is printed at 37 sites across the United States and at five additional sites internationally. The paper's dynamic design influenced the style of local, regional, and national newspapers worldwide through its use of concise reports, colorized images, informational graphics, and inclusion of popular culture stories, among other distinct features. As of 2023, ''USA Today'' has the fifth largest print circulation in the United States, with 132,640 print subscribers. It has two million digital subscribers, the fourth-largest online circulation of any U.S. newspaper. ''USA Today'' is distributed in all 50 states, Washington, D.C., and Puerto Rico, and an international edition is distributed in Asia, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homeland Security Department
The United States Department of Homeland Security (DHS) is the U.S. United States federal executive departments, federal executive department responsible for public security, roughly comparable to the Interior minister, interior, Home Secretary, home, or Ministry of Public Security, public security ministries in other countries. Its missions involve anti-terrorism, border security, civil defense, Immigration to the United States, immigration and customs, border security, border control, cyber security, cybersecurity, Airport security, transportation security, Maritime security (USCG), maritime security and Air-sea rescue, sea rescue, and the mitigation of Weapon of mass destruction, weapons of mass destruction. It began operations on March 1, 2003, after being formed as a result of the Homeland Security Act of 2002, enacted in response to the September 11 attacks. With more than 240,000 employees, DHS is the third-largest Cabinet of the United States, Cabinet department, after t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New York Times
''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of the longest-running newspapers in the United States, the ''Times'' serves as one of the country's Newspaper of record, newspapers of record. , ''The New York Times'' had 9.13 million total and 8.83 million online subscribers, both by significant margins the List of newspapers in the United States, highest numbers for any newspaper in the United States; the total also included 296,330 print subscribers, making the ''Times'' the second-largest newspaper by print circulation in the United States, following ''The Wall Street Journal'', also based in New York City. ''The New York Times'' is published by the New York Times Company; since 1896, the company has been chaired by the Ochs-Sulzberger family, whose current chairman and the paper's publ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
