During the Imperiex War set in the early 2000s, Rock acted as head of the Joint Chiefs, volunteering for the suicide mission to pilot a plane loaded with nuclear bombs as part of a plan to crack Imperiex Prime's armor and drain his energy. In a conversation with Strange Visitor, he states that he would prefer to be dead rather than live for so long after the war and seeing so many other good men die while he survived. Following the victory against Imperiex, Amanda Waller oversees his symbolic funeral in Arlington with other World War II heroes, informing Luthor over the phone that Rock had no interest in being remembered and would simply want to rest in peace with his peers.