Fogs are a common airport danger, as they can reduce visibility and make it difficult for pilots to land safely. Turbulence is another danger, as it can cause aircraft to suddenly drop or rise in altitude, leading to passenger discomfort and potential damage to the plane. Wildlife can also be a hazard, as birds can be sucked into engines and cause them to malfunction. Finally, bad weather can lead to delays and cancellations, which can cause significant disruption to air travel.