(April 2012). A proof test is a form of stress test to demonstrate the fitness of a load-bearing structure, or rescue strop. An individual proof test may apply only to the unit tested, or to its design in general for mass-produced items. Such a structure is often subjected to loads above that expected in actual use, demonstrating safety and design margin.
The United States and North Korea do not have diplomatic relations. The Swedish Embassy in North Korea is the U.S. protecting power and provides limited consular services to U.S. citizens. The U.S. Special Representative for North Korea Policy is Ambassador Joseph Yun. The U.S. Special Envoy for North Korean Human Rights Issues is Vacant.
Top Norad general: North Korea has a nuclear-capable missile that can hit the US. Apr. North Korea has developed the ability to miniaturize nuclear warheads and launch them at the US, the general in charge of the North American Aerospace Defense Command (Norad) said at a Pentagon news conference on Tuesday.