What does the MTR flight plan coded (FRD) IR240+R2+S3 (FRD) represent?

The coded flight plan (FRD) IR240+R2+S3 (FRD) represents reentries for two ESS (Exercise Support Site) sites. The components of the code indicate various factors relevant to the training operations involved.

In this context, "IR240" is likely a reference to a specific route or area being used for military operations or training, while "R2" and "S3" denote additional parameters that might define the frequency of reentries or specific locations related to the training exercises. The inclusion of multiple reentry indicators suggests that these operations are specifically designed for two distinct ESS sites, each requiring unique access or participation in the flight plan.

Thus, the correct choice highlights the focus on operational engagement for these two sites, differentiating it from other types of training or route sharing scenarios.