Oklahoma one of only two states that still allows inmate death by firing squad, another state seeks to be the 3rdOklahoma is one of 33 states that supports the death penalty, all of which favor lethal injection for inmates sentenced to die. However, many states also have an alternative method of death in case a court intervenes with lethal injection. In 2015, Oklahoma Governor Mary Fallin signed legislation allowing nitrogen gas to be used if a court strikes down lethal injection or if the drugs are unavailable. That move came after Oklahoma was catapulted into the national spotlight for the...