"good to go"

[Mullins, Bill]

 Another military phrase -- this one is new to me:

"day on stay on"

"They have eaten MREs day on stay on."
" I worked  day-on stay-on , which means that I was on call 24 hours a day,
"
"This type of assignment is day-on stay-on, meaning that the firefighters
will work till the flames are out"

Do a Google search for the exact phrase, and most of the initial responses
are military related.