Southwest Airlines currently has a fleet coverage of 86.2% but has not yet equipped any aircraft with Starlink as of the latest verified context. The rollout is announced and scheduled to begin in summer 2026, with no confirmed sightings or observations on the DCA->CMH route. Given the rollout status is 'rolling_out' but no aircraft are currently equipped, and zero observations on this route, the probability is anchored at 0.0. The high fleet coverage does not apply here since the rollout is not yet active.