 On another Christmas Eve, he invited one of his father's former squadron buddies Rear Admiral Thomas Boone (Terry O'Quinn) to the Wall.Another year, Harm was surprised by Clayton Webb (Steven Culp) bringing his half-brother Sergei to see him at the Wall, after Webb exchanged two boxcars of wheat for Sergei's freedom in Chechnya.Harmon Rabb, Jr. graduated from the United States Naval Academy at Annapolis, Maryland; and although never stated in canon, judging by his birth year and other dates made explict, it must have been in the latter half of the 1980s.