Yui is trapped in the abandoned supply base, and the BETA have broken through the defense lines.  With no hope of escape, she attempts to destroy the prototype cannon to keep it from falling into the wrong hands...
That part's classified, so it's not 
part of the normal maintenance routine.
Ya que esta sección es clasificada,
Ya que esta sección es clasificada,
Essa parte aí é confidencial, não faz parte da manutenção regular.