An exterior view of the South Carolina State House, Columbia - construction work first began in 1851 and was completed in 1907, it was designated a national historic landmark in 1976 for its significance in the post-civil war reconstruction era. (Pho South Carolina - The South Carolina House voted Wednesday to add a firing squad to the state's execution methods amid a lack of lethal-injection drugs — a measure meant to jump-start executions in a state that once had one of the busiest death chambers in the nation.The bill, approved by a 66-43 vote, will require condemned inmates to choose either being shot or electrocuted if lethal injection drugs aren't available.