Superhuman: Countdown to Apocalypse: Superhuman Series, Book 2 / Evan Currie

The first shots of war have been fired, now it's a race against time to stop a headlong rush before someone fires the last shots.  

The alien probe that created dozens of superhuman weapons and unleashed them on Houston has a new testing site, the city of Hong Kong, and Alexander Hale has been asked to intervene. With no idea who, or how, the experiments on people are being done he slips into the city to try and find out what ever he can, but beyond the skyline of Hong Kong trouble is brewing.  

With China and the USA rushing headlong toward a nuclear exchange, there may only be hours to save the world from this countdown to apocalypse.  

It'll take a superhuman effort.  

Good thing he has that going for him, because nothing else seems to be.