| Term |
Age |
History |
|---|
| 1 |
18 |
Failed to qualify for Field Researcher (Scholar). |
| 1 |
18 |
Submitted to the draft. |
| 1 |
18 |
Became a Scout (Surveyor). |
| 1 |
20 |
Mahlon Riley survey an alien world. |
| 1 |
22 |
Promoted to Scout (Surveyor) rank 1 with the new title Scout. |
| 2 |
22 |
Continued as Scout (Surveyor). |
| 2 |
25 |
Mahlon Riley survey an alien world. |
| 2 |
26 |
Promoted to Scout (Surveyor) rank 2. |
| 3 |
26 |
Continued as Scout (Surveyor). |
| 3 |
27 |
Mahlon Riley survey an alien world. |
| 3 |
30 |
Promoted to Scout (Surveyor) rank 3 with the new title Senior Scout. |
| 4 |
30 |
Attempted to change assignments. |
| 4 |
30 |
Switched to Scout (Courier) with previous rank. |
| 4 |
34 |
Spend several years jumping from world to world in Mahlon Riley's scout ship. |