FLAKK MISSILE

Use this Stratagem in your Shooting phase, when
an ADEPTUS ASTARTES INFANTRY model
from your army targets an AIRCRAFT unit with
a missile launcher. You can only make one attack
with that weapon this phase, but add 1 to that
attack's hit roll. If a hit is scored, the target
suffers 2D3 mortal wounds and the attack
sequence ends.