On 19 July, a powerful American fleet, including the battleships , , and "Mississippi" joined "Wichita" to conduct another attack on Kiska three days later. Five days later, malfunctioning radar equipment led to a battle with radar phantoms (the "Battle of the Pips"); "Wichita", two battleships, and two other cruisers expended over a thousand rounds of ammunition from their main batteries on the empty sea. That same day, the Japanese successfully evacuated the island, which was invaded by American troops two weeks later. The morning after the assumed engagement, "Wichita" launched a seaplane to reconnoiter the area, but found no evidence of Japanese forces.