Happy Independence Day.
I'm delighted to report the the boys aren't thinking much about it. They might prefer less of a distraction to better hear the creatures outside, but they don't seem to care one way or another about the fireworks noises. Certainly they aren't acting overly tense or hiding this year.
To check on them, once the fireworks had picked up after dark I did a roll call the old fashioned way, with a rattle of the kitty treats bottle. Oscar was a little late, but that doesn't mean much -- he tends to be last to ad hoc treats.
I made good on the rattle, and much chasing of treats ensured. Clearly treats were more important than noises a block or more away, and that's a good thing.