My son, Danny, and I left Israel and traveled to New York and Washington in September for a family wedding, and he had a great time – except when he heard a truck backfire, or the siren of an ambulance or fire engine. His body would tense, and he would get ready to run to a bomb shelter.Danny, 29, is on the autism spectrum, and when I told him, “There are no missile alerts in America, no missiles,” my words seemed to comfort him. But just for a moment. Soon, he would slip back into a topic that