Major Womack is an officer in the United States Air Force who served on both the USAF Prometheus and USS Odyssey.
Womack held a bridge post on the Prometheus under Colonel Lionel Pendergast, assuming the station previously used by Major Erin Gant. She was present when the ship was dispatched to intercept a ha'tak dispatched by the Goa'uld System Lords to test Earth's defenses. That vessel was destroyed en route by Ba'al, forestalling a confrontation. (SG1: "New Order") Later, she conducted two searches for the Al'kesh that Osiris had left in Earth orbit, and which had been acquired by the Trust; ultimately, she monitored the ship's destruction after it attempted to attack the Prometheus. (SG1: "Endgame", "Full Alert")
She was also on duty for the ship's final mission, to destroy an Ori satellite over Tegalus. When the satellite had instead crippled the Prometheus, prompting Colonel Pendergast to order the ship's evacuation, she relayed the order and chose a suitable evacuation site. She was hesitant to leave the bridge herself, however; Pendergast had to physically remove her from her post. (SG1: "Ethon")
Like several other former Prometheus officers, Womack went on to serve on the Odyssey, piloting that ship on its mission to the Pegasus Galaxy and the effort to neutralize the Ori supergate. When the ship came under attack by a Wraith hive ship, she successfully performed a slingshot maneuver around a black hole in order to gain them tactical advantage. (SG1: "The Pegasus Project")
Notes
Both Womack's name and rank have been subject to some confusion. She was credited simply as "Comm. Officer" until "Ethon," when she was listed as "Lt. Womack;" despite this, the name on her uniform consistently identified her as "Catherine Ambrose" and usually carried Captain's bars (in "Ethon," she had no rank insignia at all). In "The Pegasus Project," her uniform bore Major's insignia and the name "Jennings"; nonetheless, the credits listed her simply as "Lieutenant."