After he had shot down 5 FW-190's on Sep 27, 1944.
https://books.google.com/books?id=ijJ_cR4s91IC&pg=PA35&lpg=PA35&dq=capt+William+R.+Beyer&source=bl&ots=dJxA-v2Y_N&sig=4DPXasMXR27mC8a5OWbtA9Hat80&hl=en&sa=X&ved=0ahUKEwinkeazx_PMAhVFXh4KHd-QAn8Q6AEIVzAN#v=onepage&q=capt%20William%20R.%20Beyer&f=false