Light dots moving in the sky

On the evening of May 27, while I was photographing the ‘Buffalo Bridge’ in Georgetown to enter in the Georgetowner summer photo contest, I noticed unusual activity in the sky in the picture I took. The phenomena are evident in the still photos I took. I would like to show them to you.
At the begging was a dot change to like a line of light moving from the east to northeast. The picture was at the evening I was there also on the 25 of may but the night of the 27 of May I went again during the evening and capture the event on still photos.
I have diferentes time at the same location.
May, 27  (4) four photos call my attention was take by the second per second during the night June, 5  (4) four photos clear sky you don’t see it nothing but once you enlarge the photo you can see the objects. I took a photo by the second.