years before the 4th impact happened, a unidentified organization attacked both NERV and SEELE.

Misato: We are being attacked by a unknown force!

Misato: All units, deploy!-

the organization hacks the building and their personnel enters it

Enemy soldier 1: on radio Bravo 1 here, we have just entered the building.

Bravo 8, 2, 3, and 5 and others are with 1