An Army sergeant, Quornelius Radford, has been taken into custody after allegedly opening fire on five fellow soldiers at Fort Stewart in Georgia. The incident prompted a lockdown at the base and an active shooter response, which has become a routine drill across U.S. military installations. Fortunately, all five soldiers are expected to survive their injuries. The shooting is the latest in a series of violent incidents occurring at U.S. military bases in recent years. Details are still emerging as authorities continue their investigation.