"The Survivor gains 1 extra die to roll for subsequent Actions of the specified type (Combat, Melee, or Ranged). The bonus is cumulative and applies until the end of the Survivor’s Turn. The bonus is lost whenever the Survivor performs another kind of Action.
EXAMPLE: A Survivor with the Escalation: Ranged Skill spends their first Action performing a Ranged Action with a SMG (Dice 2). Their second Action is also spent for a Ranged Action, adding an additional die thanks to the Escalation Skill (Dice 3). The third Action is spent for a Move Action: the Escalation bonus is lost."