 rise because it's lighter than air, and it'll disperse quickly in the currents of jet stream and just wind currents within the atmosphere. CO2 is going to hug the lowest corridor, so it's going to go into where residents are, where cattle confinements, hog confinements, and it's going to asphyxiate. There's no odor like there is in a LP or natural gas, so there's no initial signs other than possibly a cloud as it disperses. All these things just