The 9 engines appeared to be running properly even well after the vehicle first started showing signs of trouble. The problem seemed to be associated with the upper stage or perhaps the fairing. A wild guess would be that the upper stage oxidizer tank ruptured, leading to the rocket coming apart.
The biggest hurdle to space exploration seems to be supply chain quality.
America just can’t get the quality it needs.
Yes, it looks like the failure is near the nose of the rocket; the engines can be seen continuing to fire for a few seconds. Also, it doesn’t really look like an explosion at first, maybe a structural failure followed by an explosion?
That is was I saw too, first stage working fine, but something above the first stage was not. Damn, I really like spaceX.