From the FA-18 NTRP section 3.2.4: "In the event of a HUD failure a standby reticle is available in the upper right side of the HUD for use in performing visual designations."
It literally took me two minutes to find that this morning. Actually took me longer to find the NTRP on the share drive than it did for me to find the info in the NTRP.
Before everyone starts skewering others, they should probably be sure they are correct. A little life lesson that also helps out in the Navy.