1. Facts is Facts 2. Tell the Truth 3. I don't know is a good answer. When in trouble, when in doubt see rule 1. Armstrong Forensic Laboratory, Inc. is a full service multi-disciplinary analytical laboratory located in the heart of the Dallas/Fort Worth Metroplex. Armstrong provides comprehensive analytical laboratory services, consultation, and litigation support. Armstrong's staff of highly qualified scientists are fully trained and equipped to perform Quality analyses on-time and on-budget.