07:49
UAL2650, cleared direct DINTY and I have a question for you when you're ready.
[...]
Okay, so an aircraft ahead of you at 47,000 ft was reporting aircraft above them circling. They are about 75 miles ahead of you now. I'm not showing anything, I was just wondering if you see anything up there. As they reported it they would probably have to be above 50,000.
[...]
He had reported them from about 50 miles west of LA all the way to his current position, which is about 20 miles past DINTY.
08:00
I just wondered if you ever ended up seeing anything?
[...]
UAL2650, roger, radar service terminated, change center(?) frequency.
08:20
AAL6. do you have time for a question?
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Earlier, probably about 20 minutes ago, I had an aircraft that was outbound at 47,000 ft and they reported multiple aircraft above them circling. I just wondered if you saw anything. That was probably between LA and DINTY, they reported it several times and they said that [they] looked at the Big Dipper, it was near that.
[...]
Roger. Yeah, that's what we thought it was here but the guy said - he was a retired F-18 pilot - and he's never seen anything like it, it was definitely aircraft. So I was just wondering if you had seen anything.
[...]
Roger, thanks. Yeah, I wish we knew what it was!