Buddy and i was sitting on back porch when we heard a lot of noise, i said those are military helicopters and we both got up to take a look to see what they were.....I took out my phone so that i could get a picture of them. i photographed what appeared to be 4 black hawks helicopters flying to the sw. my buddy said where can they be going in that direction. we noticed that all 4 had refueling lines on them. we did not notice anything out of the ordinary. about 10 to 15 minutes later i scanned through the photos just to get a better look at the helicopters and in one photo i noticed an object in the back ground when i zoomed in that i did not see when i was taking the pictures. the object is not a bird or a plane and seems to have a field around it. i am not sure what it is but it is an interesting photo. my buddy also noted he did nat see any other object at the time.