I had taken my 5 yr old friesian sport gelding to a x-mas parade back in December. He was pretty amped up since this was his first parade and he was never exposed to so many horses and carriages and all their fancy decorations. Once i got him saddled and prepped, I got on him and had him walking around the trailer. He was still amped up but not spooky just like....Omigosh look at everything, this is so cool... ears forward and curious. I took him to the field next to the trailer and thats when he saw a couple paso-fino horses pacing by and he wanted to trot after them, I held him back and all of a sudden he went straight up in the air.... I was completely in disbelief but my body instinctively went up and forward to use my weight to push him back down... He came back down and i made him walk out and do more circles. Never had a problem after that with him, in fact he was perfect even when kids came running out into the streets to get candy... but i was in total shock that he did rear. He has NEVER reared or threatened to... Hes had his rare "i feel good" buck out on the trail but never anything serious. I chalk it up to him being really out of his element and he just didnt know what to do with himself. Horses will be horses and they all have their crazy moments. lol Glad that both our situations turned out ok and no one was hurt.