FBI : First and second were Colombian dealers ; they were U.S. informants , feds say . A federal sting operation leads to the arrest of former soldiers . They had served in the U.S. Army . In fact , the `` traffickers '' were U.S. informants , according to federal authorities . U.S. attorney : ` ` The charges tell a tale of an international band of mercenary marksmen ''
FBI : First and second were Colombian dealers ; they were U.S. informants , feds say . A federal sting operation leads to the arrest of former soldiers . They had served in the U.S. Army . U.S. attorney : ` ` The charges tell a tale of an international band of mercenary marksmen ''