reporting earlier in the week that trian could be trying to wage a campaign to get legg mason to cutwe have reached out to trian we haven't heard back just yet we're also putting in a call to legg mason soon as we hear something we'll let you know >> don't go anywhere we've got a lot more still to come here on "closing bell." >> announcer: coming up, facebook's sandberg speaks out >> our bottom line is getting this right and you are making real changes that have impact. >> we'll get reaction from a prosecutor calling for a tech crackdown. plus the return of the meg our friday mega market panel breaks down the two key sectors to watch next week and we'lte yl llou how casinos are cashing in on the "game of thrones" finale. stay with us "closing bell" is back in two minutes. ♪ cfa charterholders have proven themselves by passing one of the most rigorous exams in the world. demand the best. demand a cfa charterholder. cfa institute. let's measure up. transparency. expertise. these are the building blocks enduring relationships are built on. as investment management professionals, let's m

police say 22-year-oldst trian torell opened fire in a . classroom they were able to get into the room, disarm him and take him into custody. the shooting came on the last day of classes for students. >> a scary experience to he s thets and have to run. >> when i was in the library on the second floor. l of a sudden someone ran in and yelled, there's an active g shooter, et down. >> terrell was a history major but dropped out elier this semester. >>> happening today, attorney general william barr will testify with a committee and testify. today's testimony was expected to befiery. news that broke last night may add to drama. the washington post reports that ys after barr released his report of the investigation, mueller wrote him a letter saying he was not satisfied with how work was characterized. he was asked whether he knew whether mueller unhappy with his summary of the report. barr answered that he didn't know, but that testimony would have been after he gave h him letter. today maryland members will elect a new member of the house. if