This is being errataed to match AS:CE up with the BMM rules used as a template. So, the intercept target numbers are:
HEAVY COVER
Light Strike/Bombing Target Number: 9
Heavy Strike Target Number: 5
Strafing/Heavy Bombing Target Number: 6
LIGHT COVER:
Light Strike Target Number: 3
Light Bombing Target Number: 4
Heavy Strike Target Number: 9
Strafing/Heavy Bombing Target Number: 11