2132 – Born Memphis TN
2150 – Enlisted MACO
2151 – Extended off-world training in the Janus Loop
2152 – Assigned to Atlanta Base
2156 – Earth Romulan War
2161 – MACO’s disbanded, accepted Starfleet Commission
Zebulon Zephyr was a MACO sergeant during the Earth-Romulan War. After the war was over, he was offered a position in Starfleet. Starfleet being strange like it was, the position was as a Lieutenant in Security. He was at first hesitant to accept a commissioned position, but his former CO convinced him to take the position.