The document discusses the roles and responsibilities of Clinical Skills Trainers (CSTs) and Ultrasound Leads in abdominal aortic aneurysm (AAA) screening programmes. CSTs are responsible for training other staff, monitoring screening technician quality through clinic visits, and maintaining equipment. Ultrasound Leads monitor staff accreditation and image quality assurance, review any incidental findings, and maintain screening equipment. Both roles work to ensure screening quality and that staff are properly trained and accredited according to national specifications.