| Term |
Age |
History |
|---|
| 1 |
18 |
Failed to qualify for Explorer (Scout). |
| 1 |
18 |
Became a Drifter (Scavenger). |
| 1 |
22 |
Find an Alien Artifact. |
| 1 |
22 |
Forced to continue current assignment. |
| 1 |
22 |
Promoted to Drifter (Scavenger) rank 1. |
| 2 |
22 |
Continued as Drifter (Scavenger). |
| 2 |
26 |
Promoted to Drifter (Scavenger) rank 2. |
| 3 |
26 |
Voluntarily left Scavenger |
| 3 |
26 |
Failed to qualify for Line/Crew (Navy). |
| 3 |
26 |
Submitted to the draft. |
| 3 |
26 |
Became a Navy (Line/Crew) with the new title Crewman. |
| 3 |
28 |
Special assignment or duty on board ship. |
| 3 |
30 |
Promoted to Navy (Line/Crew) rank 1 with the new title Able Spacehand. |