Aircraft and Artillery Intensity

[OldGamer]

I was wondering about aircraft in SP WW 2. Are aircraft "smart" enough to go after tanks in the vicinity of the targeted hex? If not, it must be difficult to attack enemy tanks with aircraft unless the tank(s) remain stationery for a number of turns.

In regards to the intensity of a bombardment, it is my understanding that the 2nd number of the two numbers displayed beside each artillery piece indicates the intensity of the bombardment and that a lower number indicates more intensity. Also, can the intensity be adjusted by a player, or is it set up in the scenario when it is designed?

Thanks.