1973 “McQ,” a John Wayne movie, with a 75-member crew of Batjac Productions which was stationed in Ocean Shores motels for 28 days, beginning July 2 with producer Michael Wayne. The leading lady was Coleen Dewherst, and other stars – Diana Muldaur and Eddie Albert. While casting on the north beaches, many Ocean Shores residents were included in the filming. Bobby Widmer, Ocean Shores fireman, was the ambulance driver. “JOHN WAVE” was designated to be hereafter the big seventh ocean wave, in dedication to “Big John” Wayne and his crew.
Taken from Ocean Shores Guide website.