The father of one of three U.S. Army Green Berets killed in cold blood by a Jordanian soldier said he does not believe the shooter acted alone, calling the murders an “assassination” that may have been ordered by someone else.

He acknowledged his suspicions might never be proven, but he said he thinks Jordan is engaged in a cover-up.

“I don’t trust the Jordanians,” said Brian McEnroe, whose son Staff Sgt. Kevin J. McEnroe was killed when a Jordanian security guard shot him at point-blank range on Nov. 4, 2016, as McEnroe and three other U.S. Special Forces soldiers were entering King Faisal Air Base in Jordan, a longtime Arab ally of the United States.