Baystate in Springfield, Mass, if I read the list correctly. The one open spot is listed as "EM / International." Given that their PGY-1 class has 13 residents, with one from Saudi Arabia, I assume this is their name for their SACM spot.
SACM is "Saudi Arabian Cultural Mission," which is to say (if I understood one place where I interviewed that had a spot like this) that the Saudi government pays for the residency spot with the understanding that a doc from that country gets it.
(
http://www.sacm.org/MedicalUnit/residency.aspx in case you think I'm making this up.)
Before everybody went "all-in," I assume these spots were filled outside the match. Listing them separately allows the program to submit a separate rank list just of those Saudi docs.