Trekipedia

Kerr, Jack

A patrician fellow with an air of natural authority, Commodore Jack Kerr demanded high standards of efficiency and decorum from his officers. The occasional facial twitch hinted at dark currents within the man, perhaps related to atrocities witnessed during the Axanar Rebellion. He kept as tight a rein on his emotions as on the daily operations of Starbase 4, which he commanded in the 2260s.^[1]