Piotr Has

Pete was a Security officer onboard the USS Star League (NCC-2101) in the late 23rd century. 

Early life before Starfleet
Pete was born on February 27, 2245 human calendar time on the planet Earth in Minsk, Russia.

Chronology

 * 2245: Pete is born on planet Earth in Terra Minsk, Russia
 * 2261: Pete enters Starfleet Academy
 * 2265: Pete graduates Starfleet Academy and promoted to Ensign, the first assignment is the USS Alfraz as a security officer.
 * 2267: Pete is promoted to Lieutenant junior grade and assigned to the USS Hajj as a security officer.
 * 2270: Pete is promoted to full Lieutenant and assigned to the USS Star League as a security officer.