Sheckley was a 23rd century Human who served in Starfleet as a security guard aboard the Federation starship USS Enterprise in the 2260s under the command of Captain James T. Kirk.
History[]
In 2269, Sheckley and Lopez joined Kirk, Spock and Leonard McCoy on the surface of an unnamed planet to search for a missing landing party that disappeared within an alien structure. When they couldn't find a doorway, Kirk asked Sheckley and Lopez to disintegrate a wall with phaser fire, but the barrier was made of material that resisted phasers and blocked communications. Spock found a hidden entrance, then assigned Sheckley and Lopez to maintain watch. He ordered them to return to the ship if the others did not return by morning. (TOS - The New Voyages 2 short story: "In the Maze")