Daniela Hayoum arrived at a Tel Aviv post office at 7 a.m. and took a number.
The line of people waiting for gas masks was long and Hayoum stepped away to run errands. She returned in the afternoon to find hundreds of Israelis crowding under a hot sun on the building’s wide steps, some holding umbrellas and others food.
Israel's military increased its forces on the northern border with Syria following advances by Syrian rebels in the Golan Heights region.
The rebels reportedly began entering the demilitarized zone between Syria and Israel on Saturday and threatened to retake the Golan. Most of Syrian President Bashar Assad's troops have left the area, Ynet reported.