not the strong law carelli asked for but a start. a difference in the ft. hood shootings, the semiautomatic pistol was not registered with the base as rules require. but many senior military leaders believe that if there were in place a system by which soldiers identified as at-risk from separated from their guns, we'd see many fewer of these kinds of shootings. when we come back, michael lewis, the best selling author, explains why he believes the stock market is actually rigged. he's agreed to give it up. that's today? [ male announcer ] we'll be with him all day as he goes back to taking tylenol. i was okay, but after lunch my knee started to hurt again. and now i've got to take more pills. ♪ yup. another pill stop. can i get my aleve back yet? ♪ for my pain, i want my aleve. ♪ [ male announcer ] look for the easy-open red arthritis cap. >>> when you picture wall street traders, you probably imagine the new york stock exchange and guys, it's almost always guys, in brightly colored jackets buying and selling stocks by making indeci

. >> general peter carelly, now retired, took over as the army's vice chief of staff in 2008.uicide rate had doubled since 2001. >> this is an area that we have to, in fact, attack. >> and he was tasked with battling the epidemic. >> as soon as they go -- >> i would be very, very careful in not underestimating the impact of 13 years of war on an all-volunteer force. i think we were seeing in those suicide numbers some of the effect of repeated deployments and high stress and trauma. >> to better understand the issue, chiarelli was briefed on every single suicide that occurred during the four years that he was the army's number two officer. in 2010, a eureka moment. >> i do want to express our thoughts and condolences. >> admiral michael mullen, then chairman of the joint chiefs of staff, had sent an art cal from a medical journal to the pentagon's top brass. >> it showed how this particular medical organization working with a really high risk population of people who could commit suicide had lowered their suicide rate to zero for a three-year period solely by recommending to p