public void setTrailingEnabled(boolean trailingEnabled) {
        this.trailingEnabled = trailingEnabled;
    }
Enable the camera trailing : The camera smoothly go in the targets trail when it moves.
Only has an effect if smoothMotion is set to true

@param trailingEnabled true to enable, false to disable (default=true)
jme3-core/src/main/java/com/jme3/input/ChaseCamera.java