Marines balking at orders to testify against men they served with, prosecutor saysCAMP PENDLETON -- Prosecutors continue to encounter problems in the prosecution of a group of Camp Pendleton Marines charged in the 2005 slaying of 24 Iraqi civilians in the city of Haditha. During two court hearings Wednesday, defense attorneys challenged the validity of the charges and a prosecutor said that some Marines ordered to testify against the defendants are not cooperating. The prosecutor, Capt. Nicholas Gannon, told a military judge that several of those Marines are angry at the order compelling their appearance. "They are grudging witnesses," Gannon...