To clear Sleighs, tap the Sleigh Icon in the Event Menu. It will show a new screen where the Sleighs are floating across the screen. Aim the crosshair on a Sleigh, so that the reticle turns green. Target the center of the Sleigh for the best accuracy. Once the reticle turns green, Tap on ‘THROW’ to use an Anti-Aircraft Missile and clear the Sleigh.