The problem with having a mute ninja as a member of G.I. Joe

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That probably is annoying during a battle. Imagine if Tripwire somehow gets a grenade stuck in his pants and no one but Snakes Eye realizes it and he's frantically trying to warn him and everyone else about it, but no one's paying attention. Worse, someone does notice, but they think he's goofing off or something.

"Dammit, Snake Eyes, this isn't the time or place for a game of charades!"