As an Assembly Task Force member I can tell you this.
The flag is not an embarassment nor something that we wish to hide. The stage decorations for the past assembly's have gone through many phases. For some years we did the backdrops, huge 20 ft canvas's. Then we did the huge letters on backdrops, then huge letters without backdrops. All the while the flags have been across the back. This year we went with projection for the backdrops. It was not clear at what height we would have the screens or what would look best. Therefore we did not place any trees or flags that would potentially cover the screens at the bottom. Also the theme for this year was "Awake" using the sun rise. From a decoration sense, the background including the projection was to emulate the sun rising from a horizon. Thus a more clear stage representing the horizon with the sun being used in the projection. It was a new look for an assembly stage. I am sure the next assembly stage will look different again. Maybe with flags maybe not. The one thing I do know is that we wanted to use the flags we did for the parade of nations. Also keep in mind that those flags are very expensive and we don't just want to put them anywhere where they can get soiled or destroyed. Even drycleaning the things is costly.
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Let me say thank you as well for this great explanation.
Cpt Jack
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