Nik Wallenda preps for Niagara Falls stunt

14 of 31: The Great Wallendas circus troupe walk the high wire during their three-tier seven-man pyramid performance at the State Fair Coliseum in Detroit, Michigan on Jan. 30, 1962. From left to right, bottom row, are, Dieter Schepp, 23; Mario Wallenda, 21; Richard Faughnan, 29; Gunther Wallenda, 42. Second row, left to right, Karl Wallenda, 57; Herman Wallenda, 60. Sitting on chair is Jana Schepp, 17. Karl's son-in-law Faughnan and nephew Schepp were killed when the pyramid formation collapsed and the performers fell to the ground. Dieter's sister Jana and Karl's son Mario were injured. (AP Photo) (AP Photo/ XNBG)

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