In early January, Dr. Linda Nguyen volunteered with Alliance for International Medicine (AIM) to provide comprehensive ultrasound teaching at Calmette Hospital and the Khmer Soviet Friendship Hospital in Phnom Penh. The AIM team comprised of internationally recognized experts in the fields of anesthesiology, critical care and emergency medicine. With the support of the Ministry of Health and both hospitals, Cambodian physicians and residents completed comprehensive online modules before attending in-person lectures. With donated ultrasound equipment, new clinical ultrasound skills were applied in the OR, ICU and emergency rooms with guidance and feedback from each instructor throughout the week. After we returned from Cambodia, there has been continued dialogue and significant change of clinical practice including new use of ultrasound for: placing central lines, performing erector spinae blocks, diagnosing pneumothorax and much more. This marks the beginning of a journey of continued collaboration and exciting growth for sustainable and durable change through diagnostic ultrasound.