be at attention in a sentence

1. Yes, in our eyes the little boy who saluted should still be at attention.
2. Mugging victims may be crying on street corners and people may be trapped in five-alarm blazes, but if Abdul-Rauf must be at attention for the national anthem, then our cops and firefighters cannot leave the station without a stirring rendition of their own.
3. It's difficult to find be at attention in a sentence.