all systems go

Originally used in the aerospace industry to indicate a preparedness to launch.

all systems go

1. (informal, idiomatic) Everything is ready.
   • 2012, Alex da Kid, Ben McKee, Dan Reynolds, Wayne Sermon, Josh Mosser, “Radioactive”, in Continued Silence EP‎^[1], performed by Imagine Dragons:

     All systems go, the sun hasn't died
     Deep in my bones, straight from inside

• “all systems go”, in OneLook Dictionary Search.