record, all of it is speculation. there s no basis to the cbs story. i want to bring in javier, a consultant for the department of justice. welcome back to you. clearly, the moment, no one is committing to a firm motive, but the cbs report clearly implies they are finding some kind of evidence that adam lanza, the sandy hook shooter, had in some way fantasized about some weird, sick competition between him and the norwegian mass shooter. in your experience with this kind of thing, would that entirely surprise you, or is there often a copycat element to these kinds of massacres? if i was to understand, you would ask me a compound question. let me answer the second question first. it s not common in my experience to see copycat killings. however, it is common to see multiple factors that influence homici homicides, especially in instances like this where it really stretches the imagination, why would somebody do something as horrific as adam lanlza did? and watching video gam
announcer: this is nbc nightly news with lester holt. substituting tonight, carl quintanilla. givening. the u.s. economy is once again in the crosshairs. a downgrade of america s debt by a ratings agency, standard & poor s, could well impact stock markets around the world tonight and our own tomorrow morning. politicians meantime are debating how the downgrade may affect your pocketbook and whether the u.s. truly deserved it. we have complete coverage tonight. cnbc s john harwood starts us off. reporter: good evening, carl. obama administration officials remain furious about s&p s decision to downgrade u.s. debt, but they also have to worry about minimizing its effects. hoping to calm markets, treasury secretary tim geithner ended uncertainty about his future by announcing he ll remain on the job rather than return to new york. in an exclusive interview with nbc news, geithner said that u.s. treasuries remain safe and sought to reassure americans worried about interes
this is nbc nightly news. the u.s. economy is once again in the crosshairs. a downgrade of america s debt by a ratings agency. standard and poors could well impact stock markets around the world tonight and our own tomorrow morning. politicians meantime are debating how the downgrade may affect your pocketbook and whether the u.s. truly deserved it. we have complete coverage tonight. cnbc s washington s john harwood starts us out. reporter: obama administration s officials remain furious about s&p s decision to downgrade debt. but they also have to worry about minimizing its effects. hoping to calm markets, treasury secretary, timothy geithner ended uncertainty about his future, wi announcing he ll remain on job rather than return to new york. in an exclusive interview, git anywhere said u.s. treasuries remain safe and sought to reassure americans worried about interest rates on mortgages and auto loans, while blasting s&p s decision. i think s&p has shown really terr
this is nbc nightly news. th u.s. economy is once again in the crosshairs. a downgrade of america s debt by a ratings agency. standard and poors could well impact stock markets around the world tonight and our own tomorrow morning. politicians meantime are debating how the downgrade may affect your pocketbook and whether the u.s. truly deserved it. we have complete coverage tonight. cnbc s washington s john harwood starts us out. reporter: obama administration s officials remain furious about s&p s decision to downgrade debt. but they also have to worry about minimizing its effects. hoping to calm markets, treasury secretary, timothy geithner ended uncertainty about his future, wi announcing he ll remain on job rather than return to new york. in an exclusive interview, git anywhere said u.s. treasuries remain safe and sought to reassure americans worried about interest rates on mortgages and auto loans, while blasting s&p s decision. i think s&p has shown really terri