The National Anthem and the Liturgy

Here's half a post from Fr. Z's blog, What Does the Prayer Really Say?

[On Memorial Day], I noticed that when the young woman came up to sing the National Anthem, she turned the microphone around and sang it facing the veterans and the flag, both which were behind the podium that had been set up. This happened twice, once at the Veterans Memorial and once at the local town cemetery. I figured that the reason she did this was to show that it was not a performance of the National Anthem, but rather sung in remembrance and honor of our country and our fallen veterans.

What might this have to do with the liturgy? Read the rest of the post at WDTPRS.