Lieutenant Blaine is only making sure you don't get drilled right between the eyes like Tombstone and Jeb Weaver did.
6 seconds sound clip from the Flaming Feather (1952) movie soundboard.
You can hear this line at 00:59:20.710 in the DVD version of the movie.
Quote context
[...]
- You too, Angel. Well, you'll join the sightseers tomorrow.
- I don't want my bride to have any doubts about her husband.
- Sergeant O'Rourke! Detail two men to guard Mr. Lee.
- Guard? You mean I'm under arrest? I'll have you broken for this, Lieutenant.
- The soldier just stopped the wedding and arrested Lucky Lee. They say he's a sidewinder.
- What does Lucky say about all this?
- Oh, he says they're crazy and he's going to prove he ain't a sidewinder.
[...]