[DS] IAVR question

What kind of chits are drawn for IAVRs if the
target has both reactive armour AND APFCs?

Second, can somebody point me to where the rule
for the effects of "Under Fire" is?  

This is a really great set of rules but suffers from
the same problem all the GZG rules have, no index.
The stargrunt game I ran the other night (first one)
suffered because I could not quickly find the rule
for recovery.