Conversation so far:
Who did Al Costello team with?
Al Costello had been working on an idea for a new tag team; he even knew who he wanted for a partner: a wrestler named Roy Heffernan.
Who was Al Costello billed as?
The Kangaroos, or Kangaroo Men as they were billed, nearly caused a riot in Madison Square Garden.
Where did Al Costello move to?
Al Costello moved to the NWA Mid-America territory near Nashville, Tennessee.

Question: Who were the internationals?
Self-contained rewrite: Who were the wrestling team the internationals?