(GR) Until the late 00s it was usual to wear a Mk4A with all visors removed and a detachable face protection visor under the NVG. In the late 00s it became commonplace to fly lengthy night-into-day sorties on Op TELIC, and to address the need for a dark visor (sunglasses had been the workaround for short day segments, but they were unsatisfactory for 4 hours of Gulf sunlight) they introduced visors which could be retracted over the NVG mount. The visors would be pushed all the way back and the cloth visor cover removed to allow the face protection visor to be used with NVG. At dawn you would stow the NVG and FPV, refit the cloth visor cover and lower the visors for the rest of the sortie.