On the 20th of April, an urgent operation ‘Commando’ was led by Art Graphique et Patrimoine who collected data of Notre-Dame and it’s damaged parts. The AGP team finished one week’s worth of work in just one day. During operation ‘Commando’ around 30 to 40 milliard points were captured. The areas which were difficult to access were captured with a drone using photogrammetry. This will form the base of the investigation and reconstruction of the Notre-Dame.