When Mike Donovan takes off in pursuit of Diana, despite the Visitors having been killed or evacuated - through the cockpit window - you can see the landing bay crew.
When Donovan takes off in a Visitor fighter in pursuit of Diana - although from the exterior of the fighter the landing bay is empty - but the view from inside the cockpit - there are Visitor personnel working on other ships.
When Donovan lands the visitor fighter following his chase with Diana, it is her hand shown landing the fighter, not his.