A friend of mine recently found and safely relocated a garter snake. He posted the following pictures and video for identification. I think it's an Eastern, but another friend, who happens to be a herpetologist from Texas, thinks it's a checker. I've handled lots of Easterns, and am fairly certain that's what it is, but I wanted confirmation before I go telling a professional that he's mistaken. So what do you guys think? Eastern or checker?

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