Sniper α
• Prereq: At least 3 adds in energy weapons, fire combat, or missile weapons
When the character uses Aim 
(page 119) on a single ranged attack against a single foe, she adds an extra 
to the damage. This stacks with the usual bonus damage from Good and Outstanding results.
Prowess
Prowess is a general category that can be taken by any character from any cosm. It focuses primarily on Perks that can be used in combat.
This perk leads to
Lethal Shot.
From Core Rules