>> hecker: i was just flabbergasted. i could not believe what i was seeing. >> martin: he visited not once, but seven times. u.s. intelligence now estimates north korea has the ability to arm up to 60 nuclear weapons. kim jong-un is ecstatic about that, and doesn't care that his program is not a secret anymore. >> hecker: their confidence level, you know, is amazing! >> wertheim: portland, oregon sits in one of the most beautiful spots in america. 90 miles to the east, majestic mt, hood. 90 miles to the west, the pacific coast. for portland's 650,000 residents their scenic locale is paired with a liberal spirit. all cycling and recycling. >> brownstein: is that u.s.d.a. organic, or oregon organic, or portland organic? >> waitress: it's just all across the board, organic. >> wertheim: and an entire tv show, "portlandia" skewers the city's progressiveness and preciousness. >> waitress: the chicken you will be enjoying tonight, his name was collin. here are his papers, okay? >> i'm steve kroft. >> i'm lesley stahl. >> i'm s

hecker, we didn't want to show you this fa sill team. but o we got up to the second floor.. >> you saw. >> just flabbergasted. i could not believe what i was seeing. essentially, 2,000 centrifuges lined up. looked aboutful. modern. >> so why flabbergasted though. everybody suspected they were secretly enriching uranium. here they are? >> we had no idea they had this many centrifuges and that modern. most amaze thing. put a blue roof on the facility. not is so visible from overhead iffagery. nobody knew. awe all they build this modern uranium enrichment plant under the noses of u.s. spy satellites. >> all the spy sat loilts. a lomt of people show how bad that they is our intel agencies are. it doesn't. it shows the how easy it is to build the centrifuge facilities and hide them. >> heap visit ed north korea seven times. inviting in nuclear scientist who would report everything he saw to u.s. intelligence. >> in all of my visit its. that's a calculus they always made. how much do they show me in order to convince me of something they would like me to take away. bumt not show