The FBI and the Department of Justice have acknowledged that 26 out of 28 examiners from the FBI Laboratory Microscopic Hair Analysis Unit gave inaccurate testimony that favored prosecutors in more than 95% of 268 trials that have been reviewed from a period lasting more than two decades. Defendants were sentenced to death in 32 of the trials; 14 have been executed or have since died in prison. University of Virginia law professor Brandon L. Garrett called the forensic failure a “mass disaster." The Washington Post reports: "The findings likely scratch the surface. The FBI said as of mid-April that reviews of about 350 trial testimonies and 900 lab reports are nearly complete, with about 1,200 cases remaining."