Did I miss something or did this rocket have no stack - it was a single stage (with boosters, but aside those still one undivided rocket)? Can anyone comment on that please.
It's side boosters, center booster, and second stage. But the second stage is the same diameter as the boosters, so you can't easily see the difference if you don't know what to look for.
I see. Seems rocket engine efficiency must have seriously improved while I was not looking, thanks.
during the stream, multiple times they said: they hid the last rocket stage at the request of customer (US gov)