To the best of my knowledge (and anyone who really knows please chime in), our pilots have never been given rules of engagement which allow them to shoot BVR (beyond visual range) in an actual conflict, although we have had the technology to do so for over forty years.
So we are spending vast sums of money for a capability which the politicians (and their overseers in the handwringing media) will not allow to be used.
In Desert Storm several Iraqi jets were zappend BVR by F-15’s taking night AAMRAM shots.