He barricaded the soldiers into defensive positions and vowed a "massacre" if rebels attacked the base.[23] A stand-off ensued between rebel tanks and loyalist troops around the perimeter of the base, but it petered out without any violence after the rebels stepped back.[23] Kỳ had apparently been angered by comments made by a rebel source who claimed that he was part of the coup attempt.[27] Kỳ was also well known for his hawkish attitude and close relations with the American military presence in Vietnam, and US opposition to the putsch was thought to have been quickly conveyed to him.[25]