Industries & Professions /
At one time, airplane manufacturers, shipbuilders, and munitions
factories were the chief suppliers of defense equipment. Today,
computer companies that work for business also build specialized
computers and software used to operate satellite and monitoring
systems. Companies like Boeing and Lockheed Martin Aeronautics
Company build commercial aircraft as well as specialized military
aircraft. The defense industry incorporates a wide variety of
technologies, sciences, and industries and requires the
participation of virtually every type of profession. According to
the Stockholm International Peace Research Institute (SIPRI), in
2007 seven of the world's 10 largest arms-producing companies were
located in the United States. That same year, the United States
spent more than $607 billion on military expenditures, accounting
for 4 percent of its gross domestic product.
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