Better Judgement or Cowardice?

A couple of weeks back, I went to lunch with my colleagues at work.

We went to Mission BBQ with colleagues.

Mission Barbecue includes a heavy branding on the whole, "Support the Troops," thing.

One of the things that I discovered, when we arrived at noon, was that they play the Star Spangled Banner at noon, as we walked in the door.

Everyone was standing, looking at the flag with their hands on their hearts.

I just stood there, no hand on my heart, but then I thought, "Maybe I should go down on one knee."

Instead, I just stood there.

Should I have kneeled, or perhaps (as a friend suggested) lift my arm in a Black Power Salute, or would that just make me an asshole?

I'm still conflicted.