It's my head cannon that he was invited to Lt. Commander Lopez's daughter's Quinceañera when a group of Neoliberal Ferengi attempted to storm the promenade and he was all "Hell no! Not on this monumental occasion!!" And came out blasting.
Chris HelgersonFor some reason, it makes the most sense for Sisko to be the one for phasers to be blazing while rocking the dress uniform. #VintageToyTuesday / #TrekTuesday