The balloons are set up at sunset in the launch area, an open field, or a football stadium and are inflated as if they are going to take off, but instead of being allowed to ascend, they are held down by the ground crew.
The balloons are set up at sunset in the launch area. The balloons are set up at sunset in an open field. The balloons are set up at sunset in a football stadium. The balloons are inflated. They are going to take off. They was being allowed to ascend. They are held down by the ground crew.