John Krasinski, American disc jockey? Yes, that’s correct -- the “Tom Clancy's Jack Ryan” star is heading back to the high school prom, only this time he’ll be hosting it. The “Office” alum, 40, took to social media on Thursday to announce that he’ll not only be spearheading a prom for millions of students who lost out on the once-in-a-lifetime experience, but he’ll also be deejaying the social-distance shindig.