Tortured Logic?

Indulge me the following scenario: A Muslim man in his early twenties is picked up in Boston because his cell phone has been the source of a series of suspiciously encoded text messages to a known Al Qaeda operative in Yemen ("The pumpkin pie is in the oven," etc.) These intercepts were done by the NSA under the aegis of the American Patriot Act. (Trust me, they can do this.) He is then found to be in this country illegally ... and when his clothing is scanned by a Geiger Counter it exhibits a dangerously high level of radioactivity. His laptop computer is also found to have detailed and credible diagrams of a suitcase nuclear weapon. Other notable intelligence suggests that an illicit atomic bomb has been smuggled into the United States and is now hidden somewhere, ready to be detonated.

For you Pollyannas who believe that such an event is impossible, please explain 9/11. Now, how do you, as our head of Homeland Security, deal with this captured Muslim man to find out the who, what, when, where and how of this possible devastating terrorist attack ... knowing that it might kill hundreds of thousand of Americans and set back our economy for possibly a generation? And, obviously, time is of the essence. Would you immediately and continuously waterboard him until he spilled the beans or, perhaps, read him his Miranda rights and lawyer him up?