We'll turn on the TV this week with three radio thrillers featuring future television stars. Before he was Bart Maverick, Jack Kelly led the frantic search for a deadly snake on a boat in "A Shipment of Mute Fate" (originally aired on CBS on January 6, 1957). Beloved TV mom June Lockhart of Lassie and Lost in Space is an actress who's had enough poor treatment at the hands of a producer in "Shooting Star" (originally aired on CBS on March 24, 1957). And Richard Anderson, who'd later give orders to the Six Million Dollar Man and the Bionic Woman, plays an inexperienced cavalry officer who's too eager for action in "Command" (originally aired on CBS on September 14, 1958).