I always hunted my Vizslas including the first, 54 years ago. My training to to shotgun blast always consisted of, first, inflating paper bags and blasting them between my hands just before meal time after I had locked them in a bathroom. This way they associated the BANG with a good outcome. Next came small firecrackers, then medium ones with the V's somewhere in the house but not next to me and, before the shotgun, big ones. These ones in the backyard with the V's around. The reason I'm posting this is two fold. One, to show one of the many ways to train your V to accept and even to be happy about noise and two, to show the importance of your V's trusting you as a reliable leader......AKA ALPHA.. During the 4th of July many dogs run away from homes, some hide under beds and furniture and some just go bananas. My Viszlas always came to me for either comfort (different noise and environment) or got exited thinking we where going hunting. Never ran away or hide under furniture. I must say that the last two (re-homed as older pup and a young adult) have slightly less confidence and get a little more concerned but they still stick to me. Enjoy the holiday.