The carriers then shifted to Formosa on 12 October for two days of heavy attacks against Japanese airfields. Just before sunset on the 13th, seven "Betty" bombers appeared out of a rain squall and rapidly closed the carriers. "Biloxi"s forward 6-inch turrets as well as her 5-inch and 40-mm batteries took five of these aircraft under fire as they passed down her port side. One aircraft broke into flames and, after "Biloxi" checked fire to avoid hitting two nearby destroyers, all five were shot down by other warships in the formation.