Dover AFB
DOX
Boston
BOX
Portland-Gray
GYX
Detroit-Pontiac
DTX
Albany
ENX
Binghamton
BGM
Buffalo
BUF
Montague
TYX
New York City
OKX
Cleveland
CLE
Britt
WBI
Exeter
WSO
Franktown
XFT
King City
WKR
Philadelphia
DIX
Pittsburgh
PBZ
State College
CCX
Villeroy
WVY
Sterling
LWX
Burlington
CXX
Charleston
RLX