Zeppelin, England 1931 Blimps were invented by the Germans during WWI and they were used to carry weapons. I think they decided to use them just for the Super Bowl when a few of them got shot down pretty quickly.
1926 -- The giant dirigible Los Angeles floats above the city of Detroit. Below is Washington Boulevard, with the Book-Cadillac Hotel on the right and the New Book Tower to the left. Photo from The New York Times Photo Archives.