After several days of bad weather, he flew three uneventful missions on 7 and 8 July 1916. On the afternoon of 8 July he lead three Strutters on an attack on the Hun airfield at Pronville. They hit the target hard and headed home. Keers noticed that his mates had got into a scrap a mile east, but seemed to have the upper hand. The EA broke off and headed home. Because Archie in the area was heavy, Keers climbed and turned westward. About five miles before he got to the lines he passed a lone Roland heading east. The two began a long scrap. After putting a good burst into the Hun, Keers saw him turn away and gave chase. His fire seemed to cause the German gunner to stop firing so he close for the kill. He did not notice that the gunner was still very much alive. The Hun's first burst hit Keers, wounding him severely. The Strutter's engine seemed to be missing on one cylinder, but it kept up enough revs that Keers was able to get back over the lines and put his machine down in a field. Pilot health was showing 26%. Keers landed safely but did not survive.