TZ-5b The Other Box/Flight Damage
Check Aim Point on TZ-1 (with +1) for average result of your other two flights. If AP is identified roll once on TZ-4b with modifiers for Target Size and Bridge only. Roll on TZ-5a for damage. After the Bomb Run you will have one result for your Flight and one result for the other two Flights in your Box. You may combine the two results, ie, two Good becomes one Excellent.
Optional and Advanced Method
This method can be used to determine the success for each Flight in each Box when Bombing by Flights and for the other Box in your Group when Bombing by Boxes. You can even use this method to determine the success of other Groups.
Check Aim Point on TZ-1 (with +1) once for each Flight in your Box, and then TZ-4b with modifiers for Target Size and Bridge only for each Flight. Roll on TZ-5a for damage also for each Flight. Do the same for the three flights in the other box.