I think this is one of those airports where the military operation and the civil operation have different ICAO codes - if you google it, you get about 50/50 split between LSTA and LSMN. The ICAO "LocationIdentifiersbystate.pdf" says that LSMN is the military one.
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Thanks, Paul. I've switched it to the civil identifier, since that's more generally useful.
I think this is one of those airports where the military operation and the civil operation have different ICAO codes - if you google it, you get about 50/50 split between LSTA and LSMN. The ICAO "LocationIdentifiersbystate.pdf" says that LSMN is the military one.