The heavy helicopter blades chopped the wet air with a loud, roaring sound. The aircraft hovered just above the open concrete roof of the Landmark Tower, swinging violently back and forth in the howling storm wind.

Rain poured down like a waterfall, soaking everything in sight.

Julian unbuckled his safety belt in a flash. He pushed the side cabin door wide open, letting the freezing wind and rain rush inside. Without a second thought, he grabbed the metal door frame and leaped out of the hovering helicopter.

His heavy boots slammed hard onto the wet concrete roof. He stumbled forward for a second, caught his balance, and stood straight up...