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Plans for arena football were put on hold in 1982 as the United States Football League was launched. Foster left the NFL to accept a position in the USFL. He eventually became executive vice-president with the Chicago Blitz, where he returned to his concept of arena football. In 1983, he began organizing the test game in his spare time from his job with the Blitz. By 1985, the USFL had ceased football operations and he began devoting all his time to arena football, and on April 27, 1986, his concept was realized when the test game was played.

What team in the USFL did Jim Foster work for?
Chicago Blitz