Bloomberg L.P. is a privately held financial software, data, and media company headquartered in Midtown Manhattan, New York City. Bloomberg L.P. was founded by Michael Bloomberg in 1981 with the help of Thomas Secunda, Duncan MacMillan, Charles Zegar, and a 30% ownership investment by Merrill Lynch.
Master Chief Petty Officer John-117, or more commonly known as the Master Chief, is a Spartan-II commando of the UNSC Naval Special Warfare Command who became one of the most important UNSC heroes during the Human-Covenant war.
Rather, the end of the timeline should be in 2542, putting the Master Chief at a healthy 31--considering late in the novel that John reflects on how Dr. Halsey recruited him 25 years prior. 2517 plus 25 would be 2542, not 2552.