TRA main HQ is fair to raid?

Lastest raid between RAT and RBA were at TRA base. As we made our way into the fort, we couldn't go in it. We looked around for some secret entrance but the only entrance is the Group Door, and gates. Wich is reall unfair to get the flag.

RAT and RBA soldiers had to regroup do to this annoying fort of unfairness. While Visitors get killed by TRA soldiers. Raiders got killed by machine guns and snipers. While we shooted them with unfair guns. Also the recruiting system is very simple, and not that interesting to join TRA. This might cause alot of chaos between those 3 groups.