California transgender students now able to pick which bathroom they want.

[Major Robert Dump]

There's an etiquette?

You folks with military experience learn to handle just about everything don't you?

Well the etiquette is more a regional thing than a military thing. For example, etiquette at a truck stop in Kentucky will vary significantly from etiquette in a school bathroom in California. One of the items on my bucket list is to use a glory hole in all 50 states, thankfully I got California years ago.