. >> frontline and propublica investigate "cell tower deaths." >> people don't understand what the danger is to a tower climber. >> and coming up later... >> corzine was a dynamic character-- from the military to goldman sachs to governor. >> frontline's "money, power and wall street" series continues with jon corzine's mf global disaster. >> jon corzine was betting on a bailout. he was betting that the relatively risky parts of europe would become less risky. he basically made a goldman-sized bet at a firm that was only a sliver of goldman's size. >> the firm's stock is getting crushed yet again this morning, and mf's credit rating was cut to junk by moody's overnight. >> how can something like this be allowed to happen? how can n e individu completely shape the destiny of this firm and ultimately its demise? >> these two stories on this special ededion ontline. >> frontline is made possible by contributions to your pbs station from viewers like you. thank you. and by the corporation for public broadcasting. major funding is provided by the john d. and catherine t. macarthur foundation,

so i turned to investigative reporter for propublica, kim barker. wait a second, go back, i got something. >> oh you can't tell by the way i wear my-- i'm pro publica we'll find out who he is,-- okay, excuse ma. barker has been on the la rose story since 2009. so she knows everybody who has met or spoken to mr. la rose. >> i don't know anybody who has met or spoke to mr. la rose. >> kim, seriously, just anything, i need something, give me something. >> i believe that there is one fort lauderdale sun sentinel reporter whose's met mr. la rose. >> the game was afoot. reporter john bernstein was the missing link in the la rose mystery. >> i have seen mr. la rose. >> finally, physical proof that la rose exists. >> and, no, i do not have any, any physical proof-- i don't have anything. >> stephen: skip that. >> his office is in the east broward building. >> stephen: a breakthrough. >> i believe it's on the 17th floor. >> stephen: a breakthrough? i scoured the 17th floor. but the pacman was nowhere to be found. so outside the building i cornered one of la

. >> frontline and propublica investigate. >> whatever the foreman tells them, they're going to do itit's a money business. >> "cell tower deaths." >> frontline continues online. watch "the meth epidemic" again. more on how meth works on the brain. >> it gets most of its effect via dopamine. >> answers to frequently asked questions about methamphetamine. read the "oregonian's" award- winning series on meth, and there's much more on frontline's website. watch more than 100 full programs; explore interactive timelines and follow frontline on facebook and twitter or join the discussion on pbs.org. pbs.org/frontline. >> frontline is made possible by contributions to your pbs station from viewers like you. thank you. and by the corporation for public broadcasting. major funding is provided by the john d. and catherine t. macarthur foundation, committed to building a more just, verdant, and peaceful world. and by reva and david logan, committed to investigative journalism as the guardian of the public interest. additional funding is provided by the park foundation, dedicated to heightening

his report was produced in partnership with propublica. >> understand on a.o.p. one for reactor scrams and a.o.p. two for turbine trips. >> the immediate actions for a.o.p. one for reactor scam are complete. >> reporter: this is a test, only a test. if it were a real nuclear accident in the making, you would know about it by now. >> right now, we've sustained a loss of r.p.s. bravo. >> reporter: we're in a simulator at the river bend nuclear power plant near st. francisville, louisiana, where these technicians are practicing how to respond to an accident. since the three mile island meltdown in 1979, this has been part of the routine at all u.s. nuclear power plants, one of many changes in the way the industry does business in the wake of that accident. but now, in the wake of the fukushima meltdowns, u.s. regulators and the industry are grappling with how best to respond, or not, to what happened in japan. gregory jaczko is the outgoing chairman of the nuclear regulatory commission. >> nuclear power plants generally work well when a lot of things aren't changing