An unnamed, male assistant at Space Control once assisted in the landing of the Recovery 7 mission that should have been piloted by Charles Van Lyden. He seemed most responsible for monitoring various tracking reports that were coming in from around the globe. He was on the same team as controller Ralph Cornish and Miss Rutherford. (TV: The Ambassadors of Death)
Behind the scenes
Neither script nor credits give us any other way to distinguish the various control room assistants but by their actor's names.