What does SZT stand for?

What does SZT mean?

SZT	San Cristobal de Las Casas, Mexico Regional » Airport Codes
SZT	Sandpoint Airport, Sandpoint, Idaho, USA Regional » Airport Codes
SZT	Snell- Zimmerman- Timmerman Community
SZT	Strike Zone Trainer Governmental » Military
SZT	Security Zone Tracking Governmental » Military
SZT	Szent (Saint) Community » Religion
SZT	Strike Zone Trainer ( Baseball) Community » Sports
SZT	Single Zone Territory Governmental » US Government