Rule: Defending
Source: Banjos House Rules
by: Banjo
During their turn, a Marine may spend 1 Action to “Defend”. This means that they are taking cover, dodging, or otherwise attempting to evade attack.
A Defending Marine gains a +1 Defense Bonus to any Alien Attack, Acid Spray, or Grenade Hit (if using the Alternate Grenade Rules) roll against them during the “Marines Move/Fire” Phase of the current Turn, and during the “Aliens Attack” Phase of the following Turn.
For each Action spent Defending, a Marine’s Defense Bonus increases by +1.