After 45 days at sea, the NRV Alliance pulled back into its home port of La Spezia today. The Sirena 10 sea trial culminated ten years of research at NURC regarding the impact of tactical active sonar on certain marine mammal species. We at the centre, and in the broader scientific community, have made great strides in this field over the last decade. Important research will continue in order to understand more about the life history of sensitive species and the potential impacts of certain human activities. Grazie mille to all those that have been involved in this project through the years.