A tractor pruning my hedge facing a field, with a cutterbar. He moves forward, he moves back, then moves forward a second time. UCS Category: VEHFarm. Duration: 02:12.
Two helicopters landing and taking off one after the other. Sound recording during the open day of the UIISCI in Nogent-le-Rotrou in France. UCS Category: AEROHeli. Duration: 03:22.