Lights that look like lightning but isn't - flash in a uniform pattern in 3 different places in the sky as if they're communicating!!!!

Lights in the sky that look like lightning, but isn't - flash in a uniform pattern in 3 different places in the sky as if they're communicating!!!!!  Each night it is the same pattern, not only in sequence, but shape.  Takes up a large swatch of the sky.  Definitely intelligent & definitely not manmade.  
Just south of NASA out over the ocean but really not anywhere near NASA.  There was a plane going by don't think it had anything to do with it.  There is also an airport on Merritt Island but don't think it's related either.  
There is NO SOUND coming from the "lightning."  
This goes on for hours at a time, several nights for a week but not every night, but always at night.  See photos for how similar each flash is…