 HERNDON, Va., Dec. 14, 2020 GLOBE NEWSWIRE -- ManTech International Corporation Nasdaq: MANT has completed the acquisition of Tapestry Technologies, a leading provider of advanced cyber solutions. Headquartered in Chambersburg, Pennsylvania, and founded in 2005, Tapestry Technologies offers a full range of cyber defense solutions and expertise, including cyber architecture and policy development, DevSecOps-based systems and software engineering and cyber training. 