Improve Countermeasures (Helm Phase)
If you have at least 12 ranks in Computers, you can try to foil enemy targeting arrays and incoming projectiles by spending 1 Resolve Point and attempting a Computers check. The DC equals 5 + 1-1/2 × the tier of the target starship + its bonus from defensive countermeasures (see page 298). If you’re successful, gunners aboard the target starship roll twice and take the worse result for gunnery checks during this round (including checks for tracking weapons).
Source
Core Rulebook pg. 325