Shana O'Brien

Shana was the Assistant Chief Tactical officer onboard the USS Paegan (NCC-1755) in the late 23rd century. 

Early life before Starfleet
Shana was born on October 21, 2242 human calendar time on the planet Earth in Cork, Ireland.

Chronology

 * 2242: Shana is born on the planet Earth in Cork, Ireland.
 * 2258: Shana enters Starfleet Academy
 * 2262: Shana graduates Starfleet Academy and promoted to Ensign, the first assignment is the USS Abu Bekr as a tactical officer.
 * 2265: Shana is promoted to Lieutenant junior grade and is assigned to the USS Ursa Martel as a tactical officer.
 * 2272: Shana is promoted to full Lieutenant and to the USS Paegan the Assistant Chief Tactical Officer.