The mission of the U.S. Public Health Service Reserve Commissioned Corps (RCC) is to provide trained, ready, and equipped public health professionals, capable of mobilizing and deploying to augment the active duty USPHS Commissioned Corps, under the authorities of the Secretary for Health in response to regional, national, and global public health emergencies. To accomplish this mission, RCC officers are required to complete both monthly and Annual Training (AT). Mission Essential Task Lists (METL) are developed to ensure training objectives are met throughout the year better preparing officers for deployments. Reserve Corps officers must always be prepared with the knowledge and skills needed to respond to situations with the appropriate tactics, techniques, and procedures. The purpose of the METLs is to provide a primary training and readiness tool for commanders, mission planners and trainers. They were developed by identifying essential tasks needed to support mission accomplishment of both the Commissioned Corps and missions with partner agencies. These tasks are critical, internally, and externally focused activities required throughout an Officer’s career to ensure readiness. This poster highlights the foundational METLs and shows the progress accomplished in the RCC to date.