Duty officer
From Tardis Wiki, the free Doctor Who reference
In the 1970s, a UNIT officer served as duty officer at a UNIT radar station. She was called by a radar technician upon detecting what seemed to be a meteor storm. (TV: Spearhead from Space (episode one) [+]Loading...{"ep":"one","1":"Spearhead from Space (TV story)"})
On the bridge of Hyperion III, a duty officer served under Commodore Travers in 2986. He sent down a stretcher party to the lounge to remove Hallett's body. (TV: Terror of the Vervoids (part ten) [+]Loading...{"part":"ten","1":"Terror of the Vervoids (TV story)"})