Over half a century later, senior chief petty officer (E-8) and master chief petty officer (E-9) were added, completing what is now known as the Chief’s Mess. Those who hold the ranks of E-7 to ...

Even Master Chief’s best AI buddy Cortana shows up, played—in a weird meld of live-action and video game CG—by regular series voice actor Jen Taylor. Plus: Master Chief does not remove his ...