SALT LAKE CITY (AP) — A vote by Utah lawmakers to bring back executions by firing squad is the most dramatic illustration yet of the nationwide frustration over bungled executions and shortages of lethal-injection drugs. Utah and several other states are scrambling to modify their laws on the heels of a botched Oklahoma lethal injection last year and one in Arizona in which the condemned man took nearly two hours to die. Meanwhile, Texas executed a Mexican mafia hit man Wednesday evening with its second-to-last dosage of drugs.