S.C. National Guard Soldiers from the 125th Multi-Role Bridge Company, use a Common Bridge Transport to launch an Improved Ribbon Bridge on the Sampit River at the Carroll Ashmore Campbell Marine Complex March 7, 2015, in Georgetown, S.C., as part of the 2015 Vigilant Guard South Carolina exercise. Vigilant Guard is a series of federally funded disaster-response drills conducted by National Guard units working with federal, state and local emergency management agencies and first responders.