i'm anthony mason. gayle king and tony dokoupil are off. president trump plans to visit el paso, texas and dayton, ohio tomorrow as the nation grapples with the deadly mass shootings in both cities. the death toll from the two weekend shootings rose to at least 31 yesterday. those victims are among more than 80 people killed or injured in both dayton and el paso within the span of just 13 hours. >> we're learning new details about the accused gunman in el paso who allegedly killed 22 people at a walmart. investigators are piecing together his timeline and motive leading up to the shooting. "cbs this morning" lead national correspondent david begnaud is in el paso. good morning, david. what more do we know this morning? >> reporter: good morning. i'd like to begin if i may by setting the scene for you. it is piercingly quiet here. there is a feeling of reverence. other than the wind, passing traffic and idle hum of first responders' engines it is really quiet. we got new information...