You might want to be careful with the laser idea, here.. my late husband was former military and had a wicked case of PTSD. One of our obnoxious neighbor kids skipped school one day to stay home and play with his dad's laser pistol. Shining a laser at Anyone with mental illness, particularly PTSD brought on by warfare, can end with horrible consequences.
Luckily for the punk neighbor kid, my ex only scared the living bejesus out of him when he got out of his truck in the middle of the road to chase him back into his home. When the kid's parents got home, they were notified.
Come to think of it, they moved not long after that, which was likely a win-win, as our area has a major military presence with massive PTSD cases.
Fourth of July is always stressful around here, but now, thankfully, it's only because of our dogs.