(December 6, 2016, 2:33 PM EST) -- BOSTON — A trial judge did not err in admitting expert testimony concerning the absence of fingerprints on a gun that a jury found a defendant had possessed, the First Circuit U.S. Court of Appeals held Dec. 1, affirming a man’s conviction of being a felon in possession of a firearm (United States of America v. Verissimo Tavares, No. 14-2319, 1st Cir.; 2016 U.S. App. LEXIS 21491)....