throughout history, the one meal when we come together, break bread, share our day and connect as a family. [ bloop, clicking ] and connect, as a family. just, uh one second voice guy. [ bloop ] huh? hey? i paused it. bam, family time. so how is everyone? find your awesome with xfinity xfi and change the way you wifi. we have new developments tonight in the investigation into the las vegas massacre. cnn's senior national respondent kyung lah has the latest. >> reporter: well, don, we've had a significant shift in the timeline. up until now we had been told that the mass shooting happened first. a security guard had then interrupted and had diverted that fire to the security guard.