3 Rivers Capital, a private equity firm, completed the acquisition of a majority stake in Gaven Industries, a provider of radio frequency and magnetic shielding for defense. Financial terms were not disclosed. "Gaven Industries is recognized worldwide for setting the bar in high-quality and innovative shielding products designed to safeguard devices and equipment from harmful effects caused by Radio Frequency Interference. 3 Rivers Capital looks forward to building on the company's impressive achievements by expanding its operational infrastructure and expanding its client base," Dale Buckwalter, 3 Rivers Capital Managing Partner.