2 The Clown: Go Away
Place this dilemma on this mission. At the start of each of your turns, if you command no personnel or ships at this mission, remove this dilemma from the game. When personnel begin a mission attempt at this mission, randomly select a personnel to be returned to its owner’s hand.
"Well, you certainly know how to bring a party to a halt."
21 V 8

Related Rulings:
    At This Mission
    Responding to Dilemmas not Faced
Image Source: Voyager: "The Thaw"