ARCCA, LLC, an ATS Family of Companies, is a growing national forensic, scientific, and engineering firm with six offices nationwide located in Penns Park, PA (suburban Philadelphia); Pittsburgh, PA; Chicago, IL; Hollywood, FL; Oakland, CA; and Seattle, WA. The company's experienced and credentialed professionals provide services in Forensic Engineering, Expert Witness Testimony, Sports Biomechanics and Human Performance, and Research, Development, Testing, and Evaluation.