I watched the launch from the Kennedy Space Center. The rocket caught everyone by surprise by blasting off with 10 seconds to go in the countdown. Then the commentator said 'Sorry, we forgot there's a 10 second delay in relaying the countdown!'
It looked like Robb had said 'So what does this button do?' DON'T TOUCH THAT BUTTON SIR!
Fantastic to see, even from 5 miles away.