Enigma is a great service and they might have a list of the Section 333 exemptions but even with the sophistication of their discovery algorithms, I'd be amazed if they had this as structured data...mostly because right now, it exists officially as a list of PDFs with some basic information, e.g. operator name and stated mission. Extracting location of operator probably wouldn't be too hard...detect if PDF follows standard letter format and then run address extraction algorithm on the first (or 5) last lines...

Obviously, someone from enigma.io could give some manual direction (such as deciding that city/state are actually important data points to extract), but it probably wouldn't be as detailed as dataset as what The Verge and Bard College have manually curated [1]

[1] https://github.com/voxmedia/data-projects/tree/master/verge-...