Been there, done that.
I was in the launch blockhouse when this Titan exploded at Vandenberg AFB.
https://www.youtube.com/watch?v=Q-aAp9hhNQQ
It totally destroyed the launch pad, a support building, and fuel transfer lines. It tooks us six months to repair everything. There was a deep smoking crater left where the support building formerly was.
Looks like the SpaceX damage here is a lot less than we had.
But I don't understand how an oxygen line can explode like that, you need a lot of fuel mixed with the oxygen to get an explosion that big. It reminds me of when the destruct charge of a Titan I accidentally went off.
https://www.youtube.com/watch?v=uoXoVEYoo5A
Biting the hand that feeds IT
