Meeting will happen with managers at NIST, probably engineers, to discuss letter sent to IG. Engineers will go over details, decision will be made as to whether further modeling is required making modifications.
Discussion will include a description of AE911Truth, which will reveal that it is little more than a political lobby group, not an engineering body, and not recognized or accredited anywhere as such.
Prediction: since the complaint comes from a group which, on its main page, claims many outrageous and non-scientific things, it will probably have little impact on either the IG or NIST. Too bad, since they might have some legitimate points about the NIST model, but their general buffoonery over the years overshadows any valuable work they might be doing.