Correct. Xu Cheng would never let them inside to see what was going on exactly, so he had to come out early.
For what?
To kill!
The headquarters realized the live feed had suddenly been cut off.
The technician shouted out in horror, "Oh no! He destroyed the drone. He was actually able to hit it and at such a high altitude no less!"
The commanders immediately said to Casey and the others on the scene, "Evacuate immediately and stop the attack for now. We can't give you an exact view as the drone has been destroyed. You're now in a blind spot."
Casey: "So how did he see us?"
HQ: "I don't know."
Caset: "Was it just luck?"
HQ: "Don't kid yourself, how could he hit the only weak spot from just a guess?"
Casey: "Isn't he only one person? We know how to kill him!"
Having said that, Casey turned around and said to his comrade, "Pique, you're in charge of that sniper 1 km away in the 45-degree direction."