UFO Sighting in Fort Lauderdale, Florida on August 18th 2016 – Noticed after taking pictures on plane orb was in a series

My wife, daughter, and I were flying from Ft.Lauderdale Fl to Houston TX yesterday. During the flight I took many pictures of the cloud formations out of the window. After reviewing the pictures, in 7 pictures taken in rapid succession I noticed a green ball of light in the lower left area. I did not see the ball when taking the pictures. It does not show up in any other of the 50 photos taken throughout the trip in the same way. ???