Yes, I have. Here is the answer I posted from another question regarding UFO’s / strange sightings:
I’ve been in the Air Force for over 13 years now and in 1998, I went to Silver Flag Alpha (desert warfare training school) in Indian Springs, Nevada. For those that don’t know that location, it is outside of Nellis Air Force Base and adjacent to the Nevada Test Site which happens to encompass a piece of real estate known as ‘Area 51’.
It was a 2 week school back then and the final 3 days were spent in a mock forward location out in the desert away from the base proper. It was also within an ‘unspecified’ but somewhat close distance south of ‘Area 51’, also known as Dreamland or Groom Lake.
I was a squad leader with 3 team members and we were one of two mobile reserve teams on standby for emergency response situations. I believe it was around 8 or 9 o’clock at night and we were all clustered around our rally point laying down in an excavated pit looking up at the stars. Mind you, this was out in the desert without light pollution with clear skies and good visibility.
What we all witnessed, and we still can’t say to this day what it might have been, was a bright object high in the atmosphere (or maybe low earth orbit?) moving directly over the top of our AO (area of operations) at a fast pace. This object came to a halt over our location, expanded out into a very large corona of light for several seconds, collapsed again to it’s original small form and continued on in the same direction it was orginally headed. We never saw anything like it again for the remainder of the time we were at Indian Springs. We asked our instructors the next day (they work at Indian Springs year around) if they could interpret what we might have seen and if they’ve seen strange things also in the night skies around Indian Springs. A couple of instructors said they had seen strange things but they wouldn’t elaborate on anything and seemed hesitant to talk about it at all.
None of us would agree to the sighting as a UFO but we all knew that you can see a satellite with the naked eye in low earth orbit if the conditions were right and where we were, the visibility was excellent. The only problem is, satellites and other space vehicles don’t come to immediate stops like that. We ended up speculating that it might be some type of military satellite or even some military experiment but we never knew for sure. It was agreed that the object’s behavior and the whole incident itself was completely bizarre and eerie to say the least. I’ll never forget that night or that experience.