a team I played for many years ago had some pretty weird calls, took some time to remember what it meant when you heard them.
we tried a few out recently:
red1,2,3, etc for when we had shot out the opposition
Blue 1,2,3 when our players were shot out
static field for when we saw no movement from the last call
this was playing a semi woods tournament, limited field size with a load of sup air bunkers placed around the field.