NASA Captures Images Of Supersonic Shockwaves Interacting In Flight Written 7 March 2019

CNET News reports that NASA captured the “first air-to-air images of the interaction of shockwaves from two supersonic aircraft flying in formation.” These images “show for the first time how shockwaves interact in flight,” giving “a gorgeous visualization of the shockwaves that are heard on the ground as loud sonic booms.” NASA’s advanced air-to-air imaging system “will come in handy as NASA continues work on the X-59 Quiet Supersonic Technology X-Plane.” 
More Info (CNET News)