CHANTILLY, Va.--(BUSINESS WIRE)--Engility Holdings, Inc. (NYSE:EGL), today announced it has been awarded a $38 million contract to support the cloud-based Constellation Combating Weapons of Mass Destruction (WMD) Situational Awareness system. Under this contract, which was awarded by the Defense Threat Reduction Agency (DTRA), Engility will provide systems integration and engineering services. Constellation represents a U.S. Government interagency effort to develop a holistic and global capabil