After all, it's not as if they have equipment onboard the lifeboat to test the veracity of bills provided to them. And, if the bills are marked...who knows, perhaps the CIA could aide in international tracking of perps.
But, what the heck....I'm no expert in such matters.
Following your great idea, my steps would be: 1. give the slugs the funny cash; 2. get the Captain free; 3. totally terminate the terrorist and sink them to the bottom of the Indian Ocean.
End of a great story.
The other terrorists would not know they got phony cash, they repeat and so do we. Eventually, no more terrorists.
Maybe some should call Mrs. Bill Clinton and make this great suggestion.
She's probably too busy with her girl friend.
No need to contact Zer0, as he is busy on real estate or some other crap.