Well, I was returning to Falkreath after a herb-gathering excursion, playing my 'Thalmor-style' Altmer Mage, when I come across a Vigilant of Stendarr, on horseback, riding along the high road above Falkreath, the town below, clearly in view. We take little notice of each other, as Night is falling, and I'm eager to return to the safety of town, laden with herbs to be ground into elixirs and potions. However, the mounted Vigilant stops a few feet in front of me, and I find myself doing the same, curious as to why the fellow suddenly ceased his march. After a few seconds of remaining perfectly still, he blurs, and vanishes. I look around, bewildered, and finally see a small speck above Falkreath, floating in the air. I squint at it, puzzled, and finally recognize it as the mounted Vigilant. He vanishes once more, blurring back to his original position on the road. He then rides hard and fast towards me, but vanishes, reappearing above the Town again before he gets too close. I begin to chuckle, utterly bewildered, but the Vigilant looses his 'Airborne powers', and begins to fall, still mounted. He drops onto the town, and vanishes behind a house. I run into town, and just outside the Jarl's Longhouse, lies the Vigilant, dead on the floor, his Horse a few feet away, blood splattering the ground around the two of them. Several Villagers gather around, a few muttering 'What a shame.' or something similar. To this day, I have absolutely no idea what happened. Though I do have a notion to get his body and drag it back to the 'Vigilant Headquarters'.