RAMAT GAN, Israel: Aziza Melech felt her body relax for the first time in days when she settled onto her inflatable mattress in an underground station of Israel’s light rail system on a recent evening. For the next few hours, at least, the 34-year-old event planner wouldn’t need to run every time a siren warning of Iranian missiles sounded. Since the war began a week ago with Israel’s airstrikes on Iran, families with young kids, foreign workers, and young professionals have brought mattresses and sleeping bags, snacks and pets into the stations each evening.