| Term |
Age |
History |
|---|
| 1 |
18 |
Entered the school of hard knocks. |
| 1 |
19 |
Spent the college years partying. |
| 1 |
22 |
Graduated. |
| 2 |
22 |
Became a Navy (Engineer/Gunner) with the new title Crewman. |
| 2 |
23 |
Advanced training in a specialist field. |
| 2 |
26 |
Promoted to Navy (Engineer/Gunner) rank 1 with the new title Able Spacehand. |
| 3 |
26 |
Continued as Navy (Engineer/Gunner). |
| 3 |
28 |
Commanding officer takes an interest in Sherman Pettitt's career. |
| 4 |
30 |
Continued as Navy (Engineer/Gunner). |
| 4 |
34 |
Sherman Pettitt is blamed for an accident that causes the death of several crew members. Sherman Pettitt's guilt drives Sherman Pettitt to excel. |
| 5 |
34 |
Became a Scout (Explorer). |
| 5 |
36 |
Gained a contact. |
| 5 |
38 |
Promoted to Scout (Explorer) rank 1 with the new title Scout. |