My deepest sense of respect to that Marine. If you've noticed, at about the 2:16 point in the first video, his arm starts to drop........instead of losing the salute, he lowers his head to keep the salute crisp.
Keep in mind that he is out there for around 3 hours (or more) holding that salute and never dropping it. That's beyond impressive.
I'm deeply impressed by his dedication to his sense of duty and honor.
And that fellow on the white HD Heritage at 2:30. That slow salute showed his full sense of honor and respect for that Marine. He couldn't have done it better.
They both have my deepest respect.
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