Although DNA evidence can seem very convincing, forensic examiners make mistakes. They can run the test incorrectly. They can miss cross-contamination by other DNA. They can misstate the scientific certainty of their findings.
After learning that its own hair and fiber analysis methods were faulty, the FBI has tried to identify all criminal convictions that relied on such evidence. The agency has initiated a nationwide review of all cases involving such evidence before 2000, when the FBI switched to the use of mitochondrial DNA analysis instead of the older techniques.
With easier access to cell phones and computers issued by their employers, employees in Milwaukee and elsewhere are finding it easier to send inappropriate message and pictures to their co-workers and others. Sending sexually explicit messages and pictures may violate codes of professional conduct and may even be considered a criminal offense in some circumstances. Recently, an FBI report has revealed issues of sexting among their employees.