It's implied. 
But it would be doin a better *job* than it does now...

No it wouldn't. If it only did it's "job" like BnZ wants and fire at bombers only, then that means a fighter with eggs could easily get through and bomb the CV. Then you'll start seeing thread whines about how the fleet AAA only fires at bombers and lets fighters through to bomb the fleet unmolested.
The fleet AAA is doing it's "job" already by firing at bombers and fighters. However,
how the fleet AAA does its "job" might need some changing.
ack-ack