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...
I'll admit you're right 
that it's unreasonable.
Admito que estás en lo correcto 
al pensar de una manera racional,
Admito que estás en lo cierto 
al pensar de una manera racional,
Concordo que não seja uma decisão racional.