| Jack Calhoun | |
|---|---|
| |
| Lieutenant Commander Jack Calhoun | |
| Actor: | Roman Fischer |
| Species: | Human |
| Gender: | male |
| Affiliation: | Federation Starfleet |
| Assignment(s): | chief engineer |
| Stationed: | USS Lexington |
| Occupation: | Starfleet officer |
| Rank: | lieutenant commander |
| Insignia: |   |
Lieutenant Commander Jack Calhoun was a Starfleet engineer on duty in the 23rd century.
He was chief engineer of the Constitution-class heavy cruiser USS Lexington in the 2260s. (The Federation Files: "Galaxy Hopper")
| Senior officers of the starship Lexington | |||||||||||
| CO | XO | HELM | NAV | SCI | ENG | COMM | SEC | CMO | |||
| NCC-1709 | Wesley | Maren | TBA | TBA | Ryder | Calhoun | TBA | TBA | TBA | ||
| NCC-1709 | |||||||||||