Since the PCal beam localization cameras have been removed and we have been worried about the decreasing output power of the lasers, we needed a method of maintaining the alignment of the PCal laser in the case of a laser failure or some other sort of laser alignment issue.  We have installed a set of irises and mirrors in the output side of the TX module to mark the current alignment into the vacuum system (the beams coming out of the the vacuum system use the RX integrating sphere as a alignment fiducial, so no additional irises are needed here).  The mirrors are mounted on magnetic kinematic mounts so that they can be reproducibly removed and replaced since they would otherwise block the PCal beams entering the vacuum system.  See attached pics of our setup at End X.