The 2016 Olympics in Rio will be remembered for many strange images provided by U.S. athletes. Think Michael Phelps' death stare, or Lilly King's finger wag.

2nd LT Sam Kendricks stops mid-run to stand at attention when he hears the national anthem🇺🇸 https://t.co/9yoosVTGNC https://t.co/aNohNvGWxN — NBC Olympics (@NBCOlympics) August 21, 2016

Let us present one more compelling, bizarre image: Pole vaulter Sam Kendricks stopping in the middle of a practice run to stand at attention for the national anthem.

As a 2nd Lt. in the U.S. Army, Kendricks obviously knows it's proper etiquette to stand at attention when the national anthem is played — even if you're only a couple of seconds away from vaulting into the air.

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The interruption in his practice routine during the qualifying round didn't seem to hurt Kendricks — he won a bronze medal.