Ultimate Iron Man #4 (2005)

Ultimate Iron Man
Tony and Rhodey are attacked by classmates who were hired for a potentially fatal "prank." Howard moves Tony, Rhodey and their friend and fellow witness Nifara to the government school in the Baxter Building, where Obidiah is also a student. They witness Obidiah murdering two of their classmates, though it can't be proven that it was murder. Tony decides to upgrade his armour further before taking matters into his own hands.
Release Date: 2005