"Bob Hope performed 22 shows and visited five hospitals in 1965. Each show lasted more than two hours, and typically there were two performances a day. Every tour he made to South Vietnam drew the attention not only of American fighting forces, but of the enemy as well. It was not unusual for the Communists to fire on or attack a base shortly after the show ended."
Source: http://www.historynet.com/bob-hopes-vietnam-christmas-tours.htm