2-30. Regular Army operational forces and the institutional force provide DSCA as directed by the Secretary of Defense and defined by DODD 3025.18. The Regular Army's key capabilities for missions are its ability to generate large forces rapidly and sustain them for long periods during an incident. When directed, and with the support of U.S. Transportation Command, the Regular Army deploys forces ranging from small detachments to corps size formations or larger, supported by the full resources of the DOD. In this case, Regular Army units are federal forces serving as part of a joint task force under Title 10, USC.