https://www.nzherald.co.nz/world/new-rule-allows-gas-firing-squads-for-executions-in-united-states/LYTRA5WX3BUYN2MGLQLLA4HVJY/

The US Justice Department is quietly amending its execution protocols, no longer requiring federal death sentences to be carried out by lethal injection and clearing the way to use other methods like firing squads and poison gas.