Alternate Reality
(split 2233)

Lieutenant Hannity was an operations division officer assigned to the USS Enterprise in 2258 of an alternate reality.

With the ship on approach to Vulcan, and James T. Kirk warning of an attack, Captain Christopher Pike ordered her to hail the USS Truman. Hannity reported that the fleet had arrived at Vulcan, but all contact had been lost. (Star Trek)

In 2259, Hannity was still serving aboard the Enterprise and was present during incident with "John Harrison" and the USS Vengeance. She reported to acting captain Hikaru Sulu that the signal of the K'normian trading ship with Kirk, Spock, and Uhura aboard was cut out and she was unsure what happened. (Star Trek Into Darkness)

Hannity was played by Amanda Foreman.
Though Pike refers to her in Star Trek as Hannity, the same name she is listed in the end credits with, her character is listed in the closing credits of Star Trek Into Darkness as "Ensign Brackett". The Star Trek Encyclopedia had entries for both "Ensign Brackett" (4th ed., vol. 1, p. 100) and "Hannity" (4th ed., vol. 1, p. 325). It is clear in the entries and the notes accompanying the entries that the authors of this reference work believed the actress was playing two characters, not one.