In the video, a landing plane can be seen descending towards the runway, but another plane is crossing its path. The landing plane then decides to ascend, and its engines can be heard roaring as the pilot flies away from the potential crash.
However, if this happens to you, don’t worry. Pilots regularly ‘cancel’ landings if they’re not entirely happy, and will circle around until they’re satisfied that their approach is safe.
Image credit: YouTube