Rig crew sighting

I ran into an old friend the other day who related to me a sighting he and others on his crew had last year. It was after their shift when they were all heading back to camp that they all saw 2 objects fall from the sky cross the valley and head straight up and out of sight. When I showed him some of my pictures he got all excited when he looked at one of them and said these were what they saw.
The whole sighting lasted about 30 seconds.