▶▶ Pod 153 - Report:

The machine lifeforms not only infected the YoRHa soldier units on the ground, they also infected the <Bunker> with a viral attack, activating a self-destruct sequence.

With this, the 13th Orbital Satellite Base <Bunker> was destroyed. 

2B and 9S avoided infection from the virus and escaped the Bunker before it was destroyed. 
Proposal: Find the remaining surviving YoRHa Soldiers and start another descent-to-ground operation on Earth to fulfill the mission.
Located 2B's black box signal.
‫تمّ تحديد مكان إشارة صندوق 2.بي الأسود.‫
Blackbox-Signal von
Einheit 2B gefunden.
Buscando señal de caja negra de 2B.
Buscando señal de caja negra de 2B.
Signal de la boîte noire de 2B
détecté.
Rilevato il segnale della scatola nera di 2B.
Sinal da caixa preta
da 2B localizado.
Определены точные координаты 
чёрного ящика 2B.