They were there the day before too, but perhaps you were part of the USA group practising arriving really late for World War III. Around the time of practising testing WMD on civilian targets and allocating reparations. This was the most popular option amongst the US groups.
The practising starting your own war against teeny weeny countries and not doing so well, had a certain 'retro' feel that appealed to some, and would provide great material for some historically accurate films.
The least popular choice however was the, practising having your hands in the air, pointing up to the sky at low flying aircraft. Rehearsing indignation and surprise in front of TV cameras, that what you do in a foreign land can actually have consequences in the USA, is particularly important.
Getting off topic for a moment, whilst there will be some giving thanks that JH's tour is cancelled others may not. For those here is the man himself pretending to be a war hero.
If the DL had an FB "You like this" comment then my thumb would be raised.
Can I add in that I saw a group of men walking around shooting at that group of men who were walking around wih their hands in the air. Turned out it was just a bunch of USAians practising their friendly fire routine. Iaculore iam, reputo laxus or summat!