A Veteran's July 4th - What issues do you have?

This is his problem, and nobody else's. While it would be fine for him to ask his neighbors to keep the fireworks to a minimum, the act of posting a sign and using his military affiliation and subsequent ailments as a means to guilt the community at large is unacceptable.

If he's got a trigger that's set off by fireworks, a set of noise-canceling headphones would be a sound investment.

TSgt Joshua Copeland, in my opinion, I feel like posting a sign, such as the example you shared, is going a little too far. To me, it almost mimics a threat or a challenge, almost certain to draw incoming (fireworks). I retired on disability from local government due to my service connected PTSD and COPD, I know full well that fireworks can be a trigger for me, but I don't post signs in my yard, daring someone to let off fireworks in my area. Effectively, the sign is a dare to pranksters. Fortunately, there are only seven homes on my street, everyone knows my condition with PTSD and they all give me a heads-up if they are going to let off fireworks or anything else that may disturb me, allowing me time to leave or be prepared for the unexpected loud pops and bangs. This was accomplished by getting to know my neighbors, explaining PTSD to them and they all offered to give me the warning. A win-win, for me and my neighbors, and no threatening signs.

If on his private property sure it is OK. If in the public park or others property no. I don't know if I would post, I would just find some classical music to enjoy or something else to do that largely dominants my hearing during this evening.