Attention Stronghold, there is a Disaster Squad inbound. Beware it's[sic] deadly firepower. Avoid close quarters combat and pick off its members one by one, or take out their leader from the get go.

Gaia spawned and then a shield formed around the area, Before her escorts spawned in too.

The escorts started to shoot your teammates and she noticed you, She used her medi-gun at you and started to drain your hp, While she heals.