JTA — When Guy, a 15-year-old Israeli, arrived at Camp Ramah, a Conservative Movement US camp in Ojai, California, in July, it didn’t take him long to pick up on California’s chill vibes. “The first thing I saw was the amazing scenery of Southern California — the mountains, the forests, all the wild animals,” Guy said. “I felt calm. Everything died down.” For Guy, that sense of calm was deeply needed. In the wake of Hamas’s horrific invasion and massacre in southern Israel on October 7, 2023, Guy was evacuated from his home in Eshkol, a region bordering Gaza that...