Unknown Lights from Michigan Camera

Haslett, Michigan – 07-31-14
We have a camera that we put up to observe the deer across the from our .
My husband brought the disk in on Sunday which contained approximately 120 pictures over a 4 day period. On July 31 at 11:00pm beginning picture number 34, we had three pictures of 6 bright , all the same and in a perfectly line, in the air.
The lights stayed exactly the same except changed in height. The camera is -activated and is set to take 3 consecutive shots and then go into a 5 minute timeout.
In the next shot after the timeout, the lights were no longer visible. We have had this camera up over the last 3 years and have never gotten anything even close to this. There was a deer in the shot which seemed to be running off.
The camera faces an old driving range, so there are no roads or buildings that would be in the picture.
We are not sure what they are, but thought maybe you could shed some light (no pun intended) on the .