Two employees bought , sold weapons on their own , company says . Company fired workers , turned them in to ATF , says source . Source : Blackwater in spotlight after shootings last weekend that killed 20 Iraqis .
Two 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 last weekend that killed 20 Iraqis .