DC Superior Court Judge Rainey Brandt declared a mistrial on May 27 after the jury could not reach a unanimous verdict for a defendant accused of aiding and abetting a mass shooting. Cotey Wynn, 45, is charged with first-degree premeditated murder while armed, three counts of assault with intent to kill while armed, and four counts of possession of a firearm during a crime of violence for his alleged involvement in a mass shooting at CRU Lounge,…