 Unexploded shells were numerous and the ground was also covered completely by unexploded hand grenades.The men of the squadron did their best to find the injured bodies and also to keep an eager crowd of people back from the still exploding shells, while others assisted in loading a large bunch of airplane engines that were to be taken to the Depot for storage.Not long afterwards, the reports of the German "Big Bertha" long range artillery gun shelling Paris began, and during the day the squadron could hear the sounds of artillery at the front.