Answer:
So far tonight in my friends list, three returned veterans mentioned that they saw or heard fireworks. Two of them reacted very negatively to the loud booms, which immediately put their senses into a state of high alertness, trying to determine what was fired from where. One of them enjoyed the fireworks, however, with many a "F*ck yeah!"
I thought the fireworks tonight were particularly good in our city, with a large finale. Maybe it's a war / patriotic thing, but cities don't seem to skimp on the fireworks when there's a war going on. It's a shame that a lot of the veterans don't really enjoy them anymore.
Time heals, one can hope.