Wisconsin Airport Codes

ISW AHH GRB RZN CWA EAU UBE
MSN UNU SUE EGV FLD MKE PVB
GTG HXF HYR ASX RAC HBW ENW
LNL LSE XES ARV MWC OEO MTW
MFI RRL RNH OCQ ATW PKF PCD
PRW RHI RIE SUW JVL RCX SBM
OLG STE MDF LNR VOK RYV UES
AUW ETB OSH