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Every bout starts with an en garde stance: One foot pointed forward, the other sideways, knees bent in different directions, shoulders turned just so.

When American cockroaches take an en garde position, they can kick at their attackers, he explained.

From his perch atop the shoulders of his mother’s boyfriend, Kai Oliver raised his red, white and blue light saber in a patriotic en garde, prepared to joust with the Washington Monument.

Homer took a moment before stepping to the en garde line.

By stepping to the en garde line at Carioca Arena 3 on Monday morning, Muhammad became the first American to compete at the Games in a hijab, the headscarf traditionally worn by some Muslim women.