20 employees bought , sold weapons on their own , company says . Krongard said the State Department has been cooperating with the prosecutors in the Blackwater probe . Company fired workers , turned them in to ATF , says source . Feds investigating claims Blackwater employees made illegal arms deals . Blackwater in spotlight after shootings February 2005 that killed Two Iraqi .
20 employees bought , sold weapons on their own , company says . Company fired workers , turned them in to ATF , says source . Feds investigating claims Blackwater employees made illegal arms deals . Blackwater in spotlight after shootings February 2005 that killed Two Iraqi .