31. Canned air horns were sold by the case. 32. They blasted air horns and chanted " Edouard! 33. Locomotives have train horns, which are air horns operated by compressed air from the train's chord. 34. They filled the sold-out arena with songs, chants, air horns and, yes, even with the wave. 35. Wearing red headbands over yellow baseball caps, the workers blared air horns and sang union songs. 36. However, Paul unexpectedly found and sounded the air horn and won the money for the group. 37. Swanson sought to develop an air horn which would mimic the sound of a classic steam whistle. 38. Some states also allow volunteer use of sirens and air horns to request the right of way. 39. Two stayed on long enough to hear the air horn at eight seconds, indicating a legal ride. 40. Air horns are a growing problem, and not just because they sound like an incoming subway train.
