End of the World!

 Terminator, Timecop, Quantum Break, 12 Monkeys

Gentlemen, the end of the world is theorized in these Hollywood movies, which is a demonstration if the use of time machine to prevent once the world has already ended. The world will end in some catastrophe and that single event has already been determined by sato the proverbial anti-christ, by its infernal algorithm, the AI. So, we must build the time machine to send back myself to save humanity before sato's algorithm converges on that event. Of course such events would keep getting computed by AI in the future, so we must have mechanism and organization equipped to run a program where we keep sending our UHF marines back in time, all who became me before joining the program.