I was attending the CI Agent course at Ft. Huachuca Army Intelligence School. The entire class was outside of the classroom bulding for an extended break in between sessions. Most of us were at the food truck, but there were a few people at the corner of the building looking at the sky and remarking "Wow! What is that?!" "Whoa, that's so weird", and similar. I went to see what they were looking at, and there was a strange object that appeared to be travelling through the sky by folding itself inside of itself. I had never seen anything like it. We were all pretty amazed, but, to be honest, we were all young, and just being exposed to classified information, and UFOs were really common at Fort Huachuca, so we didn't really discuss it any further.Within a year of this incident, most of us at the school witnessed numerous UFOs, myself included. I also had several abduction dreams around this time.Clean bill of mental health, or else they wouldn't have given me the security clearance. Never saw this object before, or after.