Blue spherical-shaped UFO over Brussels, in Belgium

On March 21, 2015, a man was in Brussels (Belgium) and, during night, he has photographed without knowing it several blue spherical-shaped UFOs one behind the other…

Witness statement:

This picture was taken by friend in Brussels Belgium . She only say the glowing sphere when viewing the images when returning home from vacation.

The sphere must have been moving at great speed to appear that many times in one frame and performing a 45 degree turn all in the same frame.

I'm a trained observer, ex F-14 RIO with 2000 hours jet time and have never seen anything like this. I trust the woman that took it, she didn't even know it was there until viewing the images later.