ManTech International announced today that it has completed the acquisition of security firm HBGary, Inc.The HBGary brand will remain, a ManTech spokesperson told SecurityWeek, and will become part of a new commercial business unit within ManTech’s Mission, Cyber, & Intelligence Solutions (MCIS) group, led by Senior Vice President of Cyber Strategy, Ken Silva.Financial terms of the deal were not disclosed, though ManTech said that it used available cash to finance the acquisition.