The top ranked recruit from the state of Maryland for the Class of 2024 and ranked 89th among juniors nationally, McKenna committed to Georgetown on May 31 and hoped to reclassify to the Class of 2023, but apparently did not complete his high school graduation requirements in order to enter college in the fall. With his listing after the conclusion of the 2023 fall semester, it was assumed McKenna had graduated, whether through Glenelg Country School or a GED intermediary.

McKenna arrives as a greenshirt and is not expected to play until the 2024-25 season; however, he is listed as a current member of the 2023-24 varsity. A full profile follows upon his graduation.