He may be ‘special forces’ trained but he has never seen combat. He is a Hashemite and I grant that they have a storied history. The thing is I doubt that this group ISIS will bother Jordan until they have Iraq well and duly subjugated. The biggest problem is that Jordan’s reasonableness with Israel will end up costing them in the long run. Anwar Sadat found that out. As much as the king may or may not be willing to fight others, it will not matter if he is dead.
Their desire for a world wide caliphate is a long cherished goal. They believe that they are on the verge of having this happen. I would suggest that this is all written of long ago and that the end game does not have Jordan in a position to do anything to stop the evil that is islam.