I'm not sure you guys have the right idea.
If Koala is in killbox, I doubt Q is referencing an operation.
Koala appears to be a nickname for a person or a place/country. My first guess was Aus in general. I like anon's idea of JA. Not sure why he'd be in killbox though.
Could go through all kill boxes and see if it lines up.
Thoughts? I'll take a few minutes to see if this lines up.