Hey Charlie, get your pal to lay down beside you (best after a walk, and dinner). Synchro breathing. Fireworks (massive for me, gunshots, for her too). They have not stopped where I am, and can come at any time.
Found best for both of us in this tiny plywood cabin is to lay on the dark grey wool rug (center of the studio cabin) temp is the coolest, and two doors can close (bathroom and kitchen). We lay down. Hard to get her at first she has to protect everything going chaos. Not just immediate real threats perceived. Real processing of them PTSD dog (how do I tell her that it is just illegal fireworks and gunshots for whooo hooooo f**kr's more interested in their premature ejaculation than drought) I have to tell my self an her over an over it is OK. We are safe. Get my heart beat down, lay my arm along (not across) her back and try to snooze. Eventually we do ,,, let it… pass…