The CHEMPACK program provides nerve agent antidotes to state and local governments through pre-positioned containers in order to improve their response capabilities. The program was established in 2002 with a pilot in three states. It aims to address the shortcomings of the Strategic National Stockpile's 12-hour response time by placing antidote supplies closer to emergency sites. The program supplies containers of antidotes to storage locations while monitoring the containers and rotating supplies to ensure they remain effective. It works with state and local partners to maintain the containers and aims to expand to additional project areas.