Can Weapon systems start low rate initial production (LRIP) until after Live Fire Testing and Evaluation has been completed?

Typically, weapon systems cannot start Low Rate Initial Production (LRIP) until after Live Fire Testing and Evaluation (LFT&E) has been completed. LFT&E is crucial for assessing the system's effectiveness and survivability under realistic combat conditions. However, in some cases, the Department of Defense may grant exceptions based on risk assessments or specific program needs, but this is generally not the standard protocol.