Following the death of William Wrigley, Jr. in 1932, his son Philip K. Wrigley took over the Santa Catalina Island Company. Philip continued his father's work in the improvement of the infrastructure of the City of Avalon. During World War II, the island was closed to tourists and used for military training facilities, including a U.S. Maritime Service training facility in Avalon. Catalina's steamships were expropriated for use as troop transports, and the U.S. Maritime Service set up a training facility in Avalon.