Upon promotion to Lieutenant, the character retains command of the light cruiser and begins missions in the Sirius Sector Block under Admiral Quinn's direction. The crisis in Starfleet instigated by the Borg incursion has created a shortage in command level personnel.
LIEUTENANT COMMANDER (lvl 11-20) ~ Tier 2
At LTC, the character relinquishes command of the light cruiser and is then assigned to another starship, filling a posted bridge officer position depending on class - tactical officer, science officer or chief engineer. The player selects the ship type from among Tier 2 vessels.
COMMANDER (lvl 21-30) ~ Tier 3
As a commander, the character has earned the position of Executive Officer on a Tier 3 starship. The player selects the ship type from among Tier 3 vessels.