**The former president of the US private security firm, Blackwater Worldwide, and four other former workers have been indicted on federal weapons charges.**Gary Jackson, who resigned last year, is accused of conspiracy to violate firearms laws, false statements and possession of an unregistered firearm.
Also indicted were the former general counsel and executive vice-president.
The charges are partially the result of a raid in 2008 by federal agents who seized 22 weapons, including 17 AK-47s.
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