Boom Supersonic XB-1 Completes Successful Second Test Flight

I remember in 2010 going to the NBAA convention in Orlando and seeing this company with a booth looking for investors/supporters. I recall at that time, feeling sorry for them as they all looked really unhappy. Here it is, what 14 years later and they are just now flying. I kinda still feel sorry for them and wonder how much money they have gone through. How much time has been invested in this “project?” I just shake my head.