Changing the A10', speedmode to 'Limited' helped them to fire at the A10's, but I'm guessing that isn't an ideal solution.
btw, you didn't name your A10's, so:
[E1, E2, E3, E4, A1, A2] exec "Target1.sqs"
...might not work till you name the A10's as A1 and A2.
Planck