After working in Stampede for a while The Fabulous Kangaroos started to travel across the United States, headlining shows wherever they went due to their ability to rile up crowds with their heel (bad guy) tactics. On one occasion in August 1958, The Kangaroos, or "Kangaroo Men" as they were billed, nearly caused a riot in Madison Square Garden during a match against Antonino Rocca and Miguel Pérez; the fans began to throw fruit and stones at them. After the match ended without a decisive winner, the promoters stepped in, turned up the arena lights, and played the National Anthem to stop a potential riot. This was a common tactic used at the time by the New York promoters to prevent riots and help the heels leave the arena unharmed. Later that year, Costello and Heffernan started working for Dory Funk's NWA Western States promotion based in Amarillo, Texas. Here, The Kangaroos won their first title as a team when they defeated Pepper Gomez and El Medico to win the Texas version of the NWA World Tag Team Championship on 17 November 1958. Their first title reign was short lived, however, as Pepper Gomez and Rito Romero defeated them to regain the titles two weeks later.