. >> jeremiah denton appeared on g. gordon liddy's radio program to talk about his book, "when hell was in session." it's about his years as a p. o.w. in vietnam and his efforts to inform the outside world what was happening at the hanoi hilton. this is 25 minutes. ♪ finish >> liddy. ♪ eternal father -- >> all right, ladies and gentlemen, my guest in the studio is one of my all-time heros. he's jeremiah denton jr., he has been many things in this life. he's a naval academy graduate, he became what in the navy they call an aerodale, i say that because one of my sons is retired navy, he's a seal, and he was shot down over north vietnam and it was the longest-serving prisoner of the vietnamese and probably the most abused of those who lived to survive it. >> alvarez was actually longer than i, shot down the the previous year. he was by himself there a long time. >> i see. and subsequent to his release became a united states senator from the state of alabama, and he has authored a remarkable book. it's called, "when hell wa