New York City Police Dept. Chief Robert Lukach, background center, and Capt. Ronald Zedalis, left, negotiate with Sgt. Kenneth O'Brien portraying a barricaded person during a tactical demonstration at ...
Key concepts Coordination Endurance Speed Introduction Have you ever wondered how you could do jump rope faster? The U.S. jump-rope record for the greatest number of jumps in one minute is 367! That's ...
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