an indigenous supporter, in particular when actions result in the destruction or damaging of a productive or vital facility, such as equipment, factories, dams, public services, storage plants or logistic routes. Prime examples of such sabotage are the events of Black Tom and the Kingsland Explosion. Like spies, saboteurs who conduct a military operation in civilian clothes or enemy uniforms behind enemy lines are subject to prosecution and criminal penalties instead of detention as prisoners of war. It is common for a government in power during war or supporters of the war policy to use the term loosely against opponents of the war. Similarly, German nationalists spoke of a stab in the back having cost them the loss of World War I. A modern form of sabotage is the distribution of software intended to damage specific industrial systems. For example, the U.S. Central Intelligence Agency (CIA) is alleged to have sabotaged a Siberian pipeline during the Cold War, using information from the Farewell Dossier. A more recent case may be the Stuxnet computer worm, which was designed to subtly infect and damage specific types of industrial equipment. Based on the equipment targeted and the location of infected machines, security experts believe it was an attack on the Iranian nuclear program by the United States or Israel. Sabotage, done well, is inherently difficult to detect and difficult to trace to its origin. During World War II, the U.S. Federal Bureau of Investigation (FBI) investigated 19,649 cases of sabotage and concluded the enemy had not caused any of them. Sabotage in warfare, according to the Office of Strategic Services (OSS) manual, varies from highly technical coup de main acts that require detailed planning and specially trained operatives, to innumerable simple acts that ordinary citizen-saboteurs can perform. Simple sabotage is carried out in such a way as to involve a minimum danger of injury, detection, and reprisal. There are two main methods of sabotage; physical destruction and the "human element". While physical destruction as a method is self-explanatory, its targets are nuanced, reflecting objects to which the saboteur has normal and inconspicuous access in everyday life. The "human element" is based on universal opportunities to make faulty decisions, to adopt a non-cooperative attitude, and to induce others to follow suit. There are many examples of physical sabotage in wartime. However, one of the most effective uses of sabotage is against organizations. The OSS