Would truth serum work ? Or it that just a thing of the fiction novels ?
If I knew that 31 of my friends would be murdered in the next day or so, and I could find out by getting info out of a captured terrorist, then I’d use every means at my disposal to get that information.
Start out by keeping them awake for 48 hours. Feed them trichinosis infected pork chops from last nights mess hall trash. Coupla visits from Zeus and Apollo from Magnum PI days just to keep their adrenaline flowing good. After a a few hours at the water park and a good hit of sodium pentathol, they will be your best friend.