A massive force of underground BETA is heading towards the Soviet Base, and there's no time to do anything but pack up and leave. Yui stays behind to destroy the Type 99 Cannon, but the Soviets want it for themselves...
They probably didn't seal 
the holes on purpose.
Creo que el ejército soviético no bloqueó a 
propósito las rutas subterráneas de aparición,
Creo que el ejército soviético no bloqueó a 
propósito las rutas subterráneas de aparición,
Eles deliberadamente não fecharam os buracos.