| Term | History |
| 1 | Became a Engineer/Gunner at age 18 |
| 1 | Is now a Crewman |
| 1 | Vessel participates in a notable military engagement. |
| 1 | Promoted to Engineer/Gunner rank 1 |
| 1 | Is now a Able Spacehand |
| 2 | Continued as Engineer/Gunner at age 22 |
| 2 | Special assignment or duty on board ship. |
| 2 | Promoted to Engineer/Gunner rank 2 |
| 2 | Is now a Petty Officer, 3rd class |
| 3 | Continued as Engineer/Gunner at age 26 |
| 3 | Gained a contact. |
| 3 | Promoted to Engineer/Gunner rank 3 |
| 3 | Is now a Petty Officer, 2nd class |
| 4 | Continued as Engineer/Gunner at age 30 |
| 4 | You are falsed accused for an accident that causes the death of several crew members. Gain the officer who blamed you as an Enemy. |
| 5 | Became a Field Researcher at age 34 |
| 5 | Work for an eccentric but brilliant mentor, who becomes an Ally. |
| 5 | Promoted to rank 1 |
| 6 | Continued as Field Researcher at age 38 |
| 6 | Gained a contact. |
| 6 | Forced to muster out. |
| 7 | Switched to Scientist at age 42 |
| 7 | Make a breakthrough in your field. |
| 7 | Promoted to rank 1 |
| 8 | Continued as Scientist at age 46 |
| 8 | A romantic relationship deepens, possibly leading to marriage. Gain an Ally. |
| 8 | Promoted to rank 2 |
| 9 | Continued as Scientist at age 50 |
| 9 | A disaster leaves several injured, and others blame you, forcing you to leave your career. Gain a Rival. |
| 9 | Lightly injured, no permanent damage. Fully recovered. |
| 10 | Switched to Flight at age 54 |
| 10 | During a battle, defeat or victory depends on your actions. You actions lead to an honorabe discharge. |
| 11 | Aging Crisis. Owe 30,000 for medical bills. |