The idea of invisibility has fascinated people for millennia, inspiring many myths, novels, and films. Invisibility cloaking has recently become a subject of science and technology. This paper describes the important current theoretical and experimental developments and tries to project into the future.
If one is to realistically entertain the notion of interstellar exploration in timeframes of а human lifespan, а dramatic shift in the traditional approach to spacecraft propulsion is necessary. It has been known and well tested since the time of Einstein that all matter is restricted to motion at sublight velocities ( << З х 10⁸ m/s, the speed of light, or с), and that as matter approaches, the speed of light, its mass asymptotically approaches infinity. This mass increase ensures that an infinite amount of energy would Ье necessary to travel at the speed of light, and, thus, this speed is impossible to reach and represent an absolute speed limit to all matter traveling through spacetime.
А theme that has come to the fore in advanced рlаnniпg for long-range space exploration in the future is the соnсерt that empty space itself (the quantum vacuum, or spacetime metric) might bе engineered to provide energy/thrust for future space vehicles. Although far reaching, such а proposal is solidly grounded iп modern physical theory, аnd therefore the possibility that matter/vacuum iпteractions might bе engineered for spaceflight applications is nоt а priori ruled out.
As part of this vision, DIA has a long history of producing comprehensive and authoritative defense intelligence overviews. In September 1981, Secretary of Defense Caspar Weinberger asked the Defense Intelligence Agency to produce an unclassified overview of the Soviet Union’s military strength. The purpose was to provide America’s leaders, the national security community, and the public a complete and accurate view of the threat. The result: the first edition of Soviet Military Power. DIA produced over 250,000 copies, and it soon became an annual publication that was translated into eight languages and distributed around the world. In many cases, this report conveyed the scope and breadth of Soviet military strength to U.S. policymakers and the public for the first time.
A Defense Intelligence Agency presentation concerning geopolitics in the region surrounding Afghanistan and Pakistan from February 2012.
(U//FOUO) Terrorists typically favor basic tactics, techniques, and procedures (TTP), off-the-shelf technology and readily available resources when planning and carrying out an attack. While simplistic in effort, these factors can be a lethal and destructive combination. Terrorists also continue to explore innovative attack options that take advantage of overlooked vulnerabilities inherent to the civilian sector. One such vulnerability is transporting bulk quantities of ammonium nitrate (AN) via the road, rail and waterway network. Using a region’s bulk AN transportation network to attack critical infrastructure and urban centers would arguably qualify as a high probability — high casualty/destruction threat scenario.
(U) NCMI assesses with high confidence that health care in Haiti is by far the poorest in the Western Hemisphere and on par with that of the less developed African countries. Furthermore, health care availability and accessibility, trauma care, and medical logistics are inadequate to respond to and mitigate the current disaster. Port-au-Prince inpatient and trauma capacity is already overburdened. Haiti is still recovering from the 2008 hurricane season, and the 12 January earthquake only worsened the already poor health situation and damaged the country’s already degraded health care system, which will require years to rebuild. Although major outbreaks of infectious diseases are unlikely as a result of the earthquake, incidences of diarrhea, respiratory diseases, and other infectious diseases likely will increase among local populations. Fires and explosions at facilities storing petroleum, oils, and lubricants (POL) are the greatest industrial chemical health threats. Chemicals released from damaged POL facilities are expected to cause localized contamination of soil and surface water.
The Defense Intelligence Analysis Center is the largest operating facility of the Defense Intelligence Agency (DIA). While the Pentagon is the agency’s official headquarters, the Defense Intelligence Analysis Center at Bolling Air Force Base in Washington, D.C. is where the majority of DIA’s employees are located. The National Defense Intelligence College and the Defense Intelligence Operations Coordination Center. In 2005 DIA opened the DIAC Expansion which allowed for more DIA personnel to serve under one roof than ever before.
This product characterizes the risk of the currently circulating new H1N1 influenza virus to U.S. forces. It is written primarily for the use of military commanders, medical officers, and operational planners.