The first Goodyear blimp used for advertising was Pilgrim of 1925. Pilgrim introduced a number of important innovations. Perhaps most importantly, Pilgrim was the first blimp to fly with safe helium rather than flammable hydrogen. Originally inflated with hydrogen when it first flew at Akron, Ohio, on 3 June 1925, Pilgrim was re-inflated with helium the next month and made its first flight with helium on 17 July 1925. Every Goodyear blimp since Pilgrim has used helium.