Any chance "Castle" is a person?
A weapons system?
A communication system?
Tracking sytem?
Have we decided what "Castle" is?
Peabody..what did we decide Castle was?
I believe we settled on" RED CASTLE"as "USACOE"
...and... "GREEN CASTLE" as the location of one of the USACOE offices...
Based on how they is being used, my current guess is that “Castle” and “Sparrow” are missions. (Examples: “Take down person X” or “Take down Corporation Y” or “Arrest Person/Group Z”.)
They might refer to either white hat or black hat missions.
I think Red and Green are Stop and Go.
So if Sparrow is a black hat mission, “Sparrow Red” might be telling our team to prevent it. If it’s a white hat mission, “Sparrow Red” might be putting it on hold for now.