Final Exam is coming!!

This is a story which background is in the vast space
A big Space Ship which has more than a million passenger, resident and employee...

--- In The Control Room---
Computer: "Captain, unknown ship are approaching"
Ship Mate A: "They wouldn't respond to our signal!!"
Captain: "......."
Ship Mate B: "The sensors indicates there are heat respond on their cannon!!"
Captain: "Raise for impact!!"

**BOOM**
Everyone: "arrghhhh!!"
Captain: "Status report!!"
Ship Mate A: "Our shield are down by 16 percent!!"
Ship Mate B: "3 percent overheating in the engines of left wing!!"
Captain: "Use the back-up energy and upgrade the shield's power to 120%!!
everyone get ready!!
we've got a situation here..."