The Israeli Air Force is concern over delays with the KC-46A program and has been exploring the viability of converting existing 767 airliners into the IAI Multi Mission Tanker Transport (MMTT) configuration.
By Chris Lofting [GFDL 1.2 or GFDL 1.2], via Wikimedia Commons
So far, IAI’s Bedek division has only carried out a single conversion for the Columbian Air Force.