So far I've only had this happen when specifically sticking an air strike to a bot. Nowmally when the strike lands you immediately see the AoE bubble and hear the sound. Sometimes when sticking it to a bot, about 3 seconds will pass before this happens. If a better description is needed please let me know!
I noticed this to a few times yesterday, my airstrike would take ages to actually happen. Somtimes up to 10 seconds before the animation would play, also noticed my firebase 'deploying' twice i.e. it would pop up then go back to a sphere again then redeply.
I've had this issue happen to me before on the 360 version. generally it's just when throwing it for me, doesn't have to stick to be delayed. I think it's lag from the host. I never have the issue when I host.