CC25 - Puzzle 5 Mystery Cache

This cache is place as a part of the Cache Clash 2025 competition. There is a codeword inside at the top of the log. After the competition, this codeword holds no meaning. 

I wear the lines you snap and share,
A grid of bonds that tag what’s in the air.
On the eve of red, white, and blue flare,
My symbol trended, bold and aware.
In a year split from a single pair,
I buzzed with #MountRushmore and public dare.

Instead of geocaching, what was I doing?

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