#LifeOrTrek Bluff Under threat from the First Federation ship Fesarius, Kirk signals it's captain (Balok) that the Enterprise has been incorporated with a substance that will reverse any destructive energy and destroy the attacker. ("The Corbomite Maneuver")

#LifeOrTrek Bluff Kirk makes a show of fearing the energy field that affected the Enterprise, and the ship - falling for his ruse - changes course for it. The field's effect on the Enterprise's computer is reversed. ("The Practical Joker")