That would be anybody who went to SERE. Probably quite a few here.
IMHO, if there’s no permanent physical injury, it’s not torture. Otherwise we’re arguing a sliding scale with nicely asking questions at one end, a standard (and legal) police interrogation further up, and so on. Anyone can define any point on that scale as being torture, and nobody’s opinion will have anymore validity than anybody else’s. A bleeding heart lib will say you frowned at him, so that’s torture, whereas a Mossad operator will probably have a much higher threshold.