we have had some operational problems
41Germany — /jerr meuh nee/, n. a republic in central Europe: after World War II divided into four zones, British, French, U.S., and Soviet, and in 1949 into East Germany and West Germany; East and West Germany were reunited in 1990. 84,068,216; 137,852 sq.… …
42space exploration — Investigation of the universe beyond Earth s atmosphere by means of manned and unmanned spacecraft. Study of the use of rockets for spaceflight began early in the 20th century. Germany s research on rocket propulsion in the 1930s led to… …
43rocket and missile system — ▪ weapons system Introduction any of a variety of weapons systems that deliver explosive warheads to their targets by means of rocket propulsion. Rocket is a general term used broadly to describe a variety of jet propelled missiles… …
44Defence of the Reich — Part of Campaigns of World War II …
45Dornier Do 217 — Do 217 Do 217 E 2 Role Medium bomber Heavy bomber …
46Chernobyl disaster — This article is about the 1986 nuclear plant accident in Ukraine. For other uses, see Chernobyl (disambiguation). Chernobyl disaster …
47Radio communications during the September 11 attacks — This article reviews some of the details of radio communications at the September 11, 2001 World Trade Center attacks. [The purpose of revealing the operational details in this article is to allow operators of other communications networks and… …
48Signals intelligence in modern history — This article is a subset article of the article Signals intelligence, which addresses the unifying conceptual and technical factors and common technologies in this intelligence discipline. This article deals with signals intelligence in the… …
49intelligence, human — ▪ psychology Introduction mental quality that consists of the abilities to learn from experience, adapt to new situations, understand and handle abstract concepts, and use knowledge to manipulate one (human being) s environment. Much of… …
50Foreign internal defense — (FID) is used by a number of Western militaries, explicitly by the United States but sharing ideas with countries including France and the United Kingdom, to describe an approach to combating actual or threatened insurgency in a foreign state… …
