TY - BOOK AU - BERGMANN Kym TI - F-35 upgrade-: do you want the good news, or the bad news PY - 2024/// KW - F-35 N2 - The good news is that the upgrade of F-35s to the Block 4 configuration will be a step change in capability, possibly as great as the original concept of the aircraft to move from a 4th generation platform to a 5th. The bad news is that the upgrade program has been delayed by about a year- and the situation might get worse. This article explains more ER -