A Starfleet officer, Jackson was the Chief of Security on Starbase 47 (Vanguard) in 2265. Commodore Reyes regarded Jackson as a good Security chief, but thought his old Chief Sadler was the best he ever had. [1]
Captain Desai considered the paperwork submitted by Jackson's office to be substandard, weakening several of her cases. She took this matter up forcefully with him. [1]