AA - American Forces Americas
AE - American Forces Europe
AP - American Forces Pacific
APO - Army/Air Post Office
APO (Army Post Office)*
BCP
CMR (Community Mail Room)
DPO - Diplomatic Post Office
FPO - Fleet Post Office
PN
HTTP
HTTPS
PCI
i11n
l7d
OMDC (Official Mail Distribution Center)
PSC (Postal Service Center)
RPO (Regional Post Office)
seo
SKU
SMS
SSL
TSL
UMR (Unit Mail Room) or just Unit