File photo of former Blackwater Worldwide security guards arriving at the U.S. District Court in Salt Lake City

 
File photo of former Blackwater Worldwide security guards arriving at the U.S. District Court in Salt Lake City
Former Blackwater Worldwide security guard Dustin Hard arrives with lawyer David Schertler at the U.S. District Court before surrendering to authorities in Salt Lake City, Utah, in this December 8, 2008 file photo. A federal judge threw out all charges on December 31, 2009 against five Blackwater Worldwide security guards accused of killing 14 Iraqi civilians in 2007, saying the U.S. government had recklessly violated the defendants' constitutional rights. Picture taken December 8, 2008. REUTERS/Chris Detrick/Files