This one-hour continuing education course introduces EMS providers—primarily EMTs—to the concept of the Lethal Diamond in trauma care. Participants will review the pathophysiology of each of the four components: hypothermia, acidosis, coagulopathy, and hypocalcemia. The course focuses on how these factors contribute to worsening trauma outcomes and explores how timely, effective BLS interventions can reduce or delay their progression. While BLS care is the emphasis, the course also provides an overview of ALS treatments such as calcium administration and blood product transfusion, helping BLS providers understand their role in supporting the broader trauma team.