carnage that we were seeing. >> 14 dead, 21 hurt. sigh yesterday farook and his officer rushing to the scene. >> i'll take a bullet before you do. >> farook's brother-in-law sat down with lester holt. >> are you angry at your brother-in-law for doing this? >> yeah, absolutely. very angry. very upset and angry. >> stoking the debate over gun control once again. >> when individuals decide that they want to do somebody harm, we're making it a little harder for them to do it. >> after months of pounding isis

she would smile every time she would see her mother, and she was nursing her. so, i mean, that's a big thing for a mom to leave a nursing child. >> did you know that he had guns? >> i know that he had a gun. >> have you even begun to figure out what your emotions are? >> i wish i could cry about it. but, you know, i have to keep it together for my kids. mother. >> that was chris jansing with syed farook's sister. >> it's striking to watch that interview, because you would think perhaps there would be a bit more emotion. >> a lot of people said she seemed very calm, but she did mention that she was trying to keep it together. >> and she mentioned she still can't cry. it's almost as if it's too difficult. fascinating interview by chris jansing. >> it's also odd to think that here you have a couple, we're talking 6,000 rounds of ammunition, 12 pipe bombs in the garage, materials to make more,

they're gonna have a blast together