Sean Powers

Lt. Powers was Assistant Chief Weapons officer onboard the USS Intrepid (NCC-1738) in the late 23rd century. 

Early life before the Intrepid
Sean was born on August 14 ,2245 human calendar time on the planet Santron.

Chronology

 * 2245: Sean is born on planet Santron.
 * 2282: Sean enters Starfleet Academy
 * 2266: Sean graduates Starfleet Academy and promoted to Ensign, his first assignment is the Outpost 6 as a Weapons Officer.
 * 2268: Sean is promoted to Lieutenant junior grade and is assigned to the USS Hannibal as a Weapons Officer.
 * 2270: Sean is promoted to full Lieutenant and is assigned to the USS Intrepid as the Weapons Officer.