Summary
After temporarily repelling the scavengers, the warrant officer introduced himself to Karula and briefly explained the purpose of their mission: to carry out an expedition mission known as "Project Eastern." Upon discovering they were still in danger, Karula was terrified, but Lida assured her that Valena would definitely come to save them.

[After the fierce battle]
"Dawn" Well done, "White Emperor." You sent those scavengers running for their lives.
"White Emperor" Huh, really? I... my every move was just following "Dawn's" commands...
"White Emperor" One moment it was "hit the dirt," the next it was "aim left and open fire"... I was practically like a marionette.
"White Emperor" I've been in such a daze up until now, I don't even know if I actually hit any enemies..
"White Emperor" No, wait! It's better if I didn't. I didn't kill a single person, I just drove them away...
"White Emperor" Yes, that must be it.
Lida Now that the battle is over, there's no need to call each other by callsigns anymore!
Lida Let me introduce myself first. I'm Lida. I was born in the United Territories, but I've been living in the Union ever since!
Karula Um, my name is Karula. I'm Vespuccian.
"Dawn" As for my name...
Lida Though it seems most people just call big brother by his nickname.
Lida Which is "Warrant Officer"!
Karula Then, should I call you Mr. Warrant Officer? I was a little hesitant to speak to you before; I really should have communicated earlier during the trip...
Warrant Officer I understand, traveling through space with strangers makes you too nervous.
Warrant Officer My presence on Nox this time is at the behest of the Primorsky Republic, to conduct an expedition mission.
Karula No wonder you brought so much firepower for an "expedition," considering we ran into bandits the moment we touched down...
Karula By the way, we're safe now, right?
Warrant Officer I wouldn't say that just yet.
Warrant Officer The Scavengers are split into numerous factions. This group backed down, but a tougher group might still try their luck...
Karula There are more?! I—I'm all burned up! When will the recovery team find us?!
Lida Don't worry! Sister Valena will definitely come to save us!
Warrant Officer If she's lucky, she will bring the Eighth Squad with her.
Lida Eighth Squad?
Warrant Officer A special forces unit of the United Territories' Security Bureau. They are the “Signal Flags” of the planet Nox.
Lida Wow! So that means they're as powerful as you, brother
Karula Signal Flags? Warrant Officer, were you a member of the Signal Flags unit before? Mm—no wonder you have such a… unique aura.
Lida Kalura was so scared of big brother the whole way that she didn't dare say a word.
Karula Ah, ahaha... B-but who is Valena?
Warrant Officer She is...
Warrant Officer She is the reason I came to this planet.