We're going to pay our respects, Pres Trump tells reporters as he emerges from WH to board Marine One at start of trip to Las Vegas.
Mark Knoeller-With the First Lady at his side, Pres said more is being learned about the Las Vegas gunman but would be announced at a later time.
Pres and Mrs Trump walk to and board Marine One on a cool Autumn morning. Pres returns salute from US Marine.
About 4 1/2 hour flight.
