Sean Knight and Elijah Hastings exchanged glances, carefully walking down the corridor.
After turning the corner, they could see another fairly large space ahead.
"Boss, listen, there seems to be some sound."
"Water sounds. There's an underground river below... Wait, that's gunfire above!" Sean Knight replied offhandedly, then he quickly realized.
Trouble!
"You stay here, boss; I'll go up and have a look!" Elijah Hastings dropped his engineer shovel and, with a gun in hand, turned and rushed upward.
"If there are too many of them, lure them in here! You know the situation on this side, use the terrain and kill them!" Sean Knight shouted.
"Boss, I understand!" Elijah Hastings replied, then charged upward.
Sean Knight originally planned to continue downward but thought better of it; he dropped the engineer shovel and followed Elijah Hastings up.
When they reached the uppermost part of the corridor, Sean Knight found that Elijah Hastings had already joined the battle.
