0 Security Drills
Decay: 5. (When there are five cards on this event, destroy it.)  Plays in your core. While your personnel is facing a dilemma, you may place a card from hand on this event to make that personnel gain a skill he or she already has until the end of that dilemma.

"Schedule another surprise drill. If the Dominion tries to infiltrate the station, I want to be ready for them."
5 P 12

Image Source: Deep Space Nine: "The Way of the Warrior, Part I"