Aqua had entered a new organization for stopping bad guys. As a requirement, he had to wear sunglasses and a trench coat, and go by a codename. This codename was Nivlac. He was tracking a group of terrorists who were planning to blow up the big city. Or at least one of them. There's a lot of big cities.
He tracked them into a desert, where he discovered their hideout. Upon entering, he snuck around and figured out where everything is. Then he held a man hostage. This man announces things to the group. He told him to tell them to hide in their anti-tornado safety rooms, which the group had installed because tornadoes are surprisingly common. They all hid there, Aqua knocked the man out, and then he walked to the bombs. With a single well placed laser, he cut a switch that caused a timer to start on the bomb.
"Nivlac" walked calmly out of the base and quite far away. After a bit of time, there was an explosion. Nivlac never faced it. Whoever wasn't caught in the blast was going to be buried alive anyway, and it would be best if he wasn't discovered there by local authorities.