FILE – In this Dec. 15, 2019 file photo Los Angeles Rams punter Johnny Hekker kicks an onside kick during an NFL football game against the Dallas Cowboys in Arlington, Texas. The NFL is considering adding a “booth umpire” and a senior technology advisor to the referee to assist the officiating crew. The league also is looking at other rules changes, including an alternative to the onside kick. NFL clubs received a list of potential rules changes on Thursday, May 21, 2020. (AP Photo/Roger Steinman, file) ORG XMIT: NYPS209