Between the mid 1950's and mid 1970's I have observed what could be described as UFO phenomena on at least four different occasions. All these were remarkably DIFFERENT in nature and all were observed in the company of witnesses. I first thought about reporting them to someone when I came across the Lemon Grove(CA) (sighting/landing?) description from the 70's on the Internet. Apparently, a youth was the witness to that actual incident but I had overheard a conversation about it taking place in a coffee shop between members of the Lemon Grove Sheriff's Department within a month or so and it had peaked my curiosity since the landing had apparently been sighted in the BACK YARD of the house I had occupied for a number of years and had only RECENTLY left.