sentences:  Jack Markell following a pair of debilitating snowstorms from Feb. 7 through Feb. 12, 2010.DEARNG troops completed over 250 missions assisting local and state agencies with including Emergency Medical Services, fire calls, law enforcement, dialysis patient transport and civilian transport to warming stations.National Guard units can be mobilized at any time by presidential order to supplement regular armed forces, and upon declaration of a state of emergency by the governor of the state in which they serve.