>> reporter: dozens of firefighters on the scene desperately pulling out bricks and debris. three have been removed from the rubble. >> two of them are life threatening. >> reporter: in 2013, a crane collapsed and killing one and injures two others. an investigation found it was caused by operator error. david, tonight in this incident, we know that the workers were loading construction thmaterial on the roof when it collapsed underneath them. no doubt an investigation is under way. david? >> all right. when we come back, the risk of breast cancer and which women are at highest risk? we have more on that. and vitamin "d." are americans taking too much of the supplement? and o.j. simpson and the parole board. will he go free? parole board. will he go free? this is my body of proof that i can take on psoriatic arthritis with humira. humira works by targeting and helping to block a specific source of inflammation that contributes to both joint and