Southwest Airlines currently has a high fleet coverage ratio announced for future rollout (86.2%) but as of the latest data, no aircraft are equipped and no Starlink observations exist on the BNA->SAV route. The rollout status is 'rolling_out' with no confirmed installations yet, and no recent news or sightings support higher probability. Given the announced future rollout and high fleet coverage target, a minimal non-zero probability is assigned to reflect imminent deployment, but the lack of current evidence keeps the score low and conservative.