Comment: As a Veteran...

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As a Veteran...

United States Code, 36 U.S.C. § 301, states that during a rendition of the national anthem, when the flag is displayed, all present except those in uniform should stand at attention facing the flag with the right hand over the heart; Members of the Armed Forces and veterans who are present and not in uniform may render the military salute.

https://en.wikipedia.org/wiki/The_Star-Spangled_Banner#Custom

You are never asked to renounce your Oath upon separation from military service.

I do not stand and place my hand over my heart, I render a military salute, with Boonie hat on at air shows or sporting events, (Firecracker 400).

https://en.wikipedia.org/wiki/Boonie_hat

"I, __________, do solemnly swear (or affirm) that I will support and defend the Constitution of the United States against all enemies, foreign and domestic."

https://en.wikipedia.org/wiki/Oath_of_enlistment

There is no duration defined in the Oath