WARSAW, Poland — Prague-based Czechoslovak Group (CSG) has announced it is entering the unmanned aerial systems market with the launch of a new company, AviaNera Technologies. CSG is a leading defense industry player in the Czech Republic and Slovakia where it operates a number of plants that produce weapons, ammunition and military equipment. The group is owned by Czech entrepreneur Michal Strnad, its chief executive who is the son of CSG’s founder, Jaroslav Strnad. “Our goal is to become a