// Add button to fire AH64
Sandcastle.addToolbarButton(‘Fire AGM-114’, function() {
//Seed the random number generator for repeatable results.
Cesium.Math.setRandomNumberSeed(0);
promise.then(function(dataSource) {
  viewer.dataSources.add(dataSource);
  //Load cmzl file
  var promise = Cesium.CzmlDataSource.load('/sjc/agmLaunch.czml');
  promise.then(function(dataSource) {
      viewer.dataSources.add(dataSource)});
  //Get the array of entities
  var entities = dataSource.entities.add({
    orientation : new Cesium.VelocityOrientationProperty(position)
  });
})
});
``
I have been building an app that shows a visual depiction of the flight path of a missile. I am almost done with my demo and have properly oriented the aircraft but I don’t understand how to change orientation of the missile as it flies. I saw some other people have said to use the Cesium.VelocityOrientationProperty function to modify the czml file my missile is in on the client side, this is what I have so far.