An engineer crouches under a park bench as fighter jets roar overhead. An athlete wracked by anxiety can’t sleep as explosions go off. Two weeks of fierce U.S.-Israeli bombardment of Iran’s capital, Tehran, has left residents in a state of shock. From central historic quarters to upscale northern areas, bombs are shaking the city day and night, with no sirens or warning systems to alert the public. With the internet shut down, families and friends rely on each other for news about the war and the latest damage caused by airstrikes. Residents say security forces have increased their presence in the streets to prevent any shows of dissent. At the same time, the government has encouraged its supporters to gather in street demonstrations.