And NASA takes drag seriously: the Aeronautics Mission Directorate has for decades improved flight efficiency with its research in fluid dynamics. For much of its aeronautics work, NASA uses wind tunnels, which give researchers a controlled environment to test materials and designs in conditions ranging from breezy to extreme. To test materials that would best reduce drag, the company partnered with NASA and sent Wilkinson nearly 60 different fabrics to analyze using a small-scale wind tunnel at Langley. The LZR Racer was the first fully bonded, full-body swimsuit with ultrasonically welded seams. The process of fusing seams ultrasonically rather than overlapping and stitching fabric helped reduce drag by 6 percent. NASA also demonstrated that a low-profile zipper, ultrasonically bonded into the fabric and hidden inside the suit, generated 8 percent less drag in wind tunnel tests than a standard zipper. Freestyle Innovation Similar in style to a wetsuit, the original LZR Racer covered either some or all of the torso and legs, depending on the preference of the swimmer or the event it was being used for.

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In , Marion Jones brushed off the doping charges facing her then husband, C. Hunter, and took Sydney by storm, winning more medals than any female track-and-field athlete in history. This year, the odds are even stiffer: her boyfriend, sprinter Tim Montgomery, faces a lifetime ban for alleged steroid use; she herself has been named as a possible target of the U.