Balloon descent: Listen & Download Balloon descent .mp3 Error! Change your browser, please! ⇓ Download Wind tunnel ventilation ⚠ Truck Air Brakes ⚠ Air is let through the regulator ⚠ Balloon descent ⚠ Blower, air broom ⚠ A stream of air breaks out of a metal pipe ⚠ Soccer ball ⚠ Air is blown through a glass tube ⚠ Small compressor blowing air ⚠ Mask breathing ⚠ Balloon inflating ⚠ Construction, compressor discharges air ⚠ ★★★★★