Alaska Region Anchorage, Alaska (AFC) Fairbanks, Alaska (AFG) Juneau, Alaska (AJK) Central Region Denver/Boulder, Colorado (BOU) Grand Junction, Colorado (GJT) Pueblo, Colorado (PUB) Chicago, Illinois (LOT) Lincoln, Illinois (ILX) Indianapolis, Indiana (IND) Northern Indiana (IWX) Quad Cities, IL/IA (DVN) Des Moines, Iowa (DMX) Dodge City, Kansas (DDC) Goodland, Kansas (GLD) Topeka, Kansas (TOP) Wichita, Kansas (ICT) Jackson, Kentucky (JKL) Louisville, Kentucky (LMK) Paducah, Kentucky (PAH) Detroit/Pontiac, Michigan (DTX) Gaylord, Michigan (APX) Grand Rapids, Michigan (GRR) Marquette, Michigan (MQT) Duluth, Minnesota (DLH) Minneapolis/Twin Cities, Minnesota (MPX) Kansas City/Pleasant Hill (EAX) Springfield, Missouri (SGF) St. Louis, Missouri (LSX) Hastings, Nebraska (GID) North Platte, Nebraska (LBF) Omaha/Valley, Nebraska (OAX) Bismarck, North Dakota (BIS) Grand Forks, North Dakota (FGF) Aberdeen, South Dakota (ABR) Rapid City, South Dakota (UNR) Sioux Falls, South Dakota (FSD) Green Bay, Wisconsin (GRB) La Crosse, Wisconsin (ARX) Milwaukee/Sullivan, Wisconsin (MKX) Cheyenne, Wyoming (CYS) Riverton, Wyoming (RIW) Eastern Region Caribou, Maine (CAR) Gray/Portland, Maine (GYX) Boston, Massachusetts (BOX) Mount Holly/Philadelphia, New Jersey (PHI) Albany, New York (ALY) Binghamton, New York (BGM) Buffalo, New York (BUF) New York/Upton, New York (OKX) Newport/Morehead City, North Carolina (MHX) Raleigh, North Carolina (RAH) Wilmington, North Carolina (ILM) Cleveland, Ohio (CLE) Wilmington, Ohio (ILN) Pittsburgh, Pennsylvania (PBZ) State College, Pennsylvania (CTP) Charleston, South Carolina (CHS) Columbia, South Carolina (CAE) Greenville-Spartanburg, South Carolina (GSP) Burlington, Vermont (BTV) Baltimore/Washington, Virginia (LWX) Blacksburg, Virginia (RNK) Wakefield, Virginia (AKQ) Charleston, West Virginia (RLX) Pacific Region Tiyan, Guam (GUM) Honolulu, Hawaii (HFO) Pago Pago, American Samoa (PPG) Southern Region Birmingham, Alabama (BMX) Huntsville, Alabama (HUN) Mobile/Pensacola, Alabama (MOB) North Little Rock, Arkansas (LZK) Jacksonville, Florida (JAX) Key West, Florida (KEY) Melbourne, Florida (MLB) Miami, Florida (MFL) Tallahassee, Florida (TAE) Tampa, Florida (TBW) Peachtree City/Atlanta, Georgia (FFC) Lake Charles, Louisiana (LCH) New Orleans/Baton Rouge, Louisiana (LIX) Shreveport, Louisiana (SHV) Jackson, Mississippi (JAN) Albuquerque, New Mexico (ABQ) Norman/Oklahoma City, Oklahoma (OUN) Tulsa, Oklahoma (TSA) San Juan, Puerto Rico (SJU) Memphis, Tennessee (MEG) Morristown/Knoxville, Tennessee (MRX) Nashville, Tennessee (OHX) Amarillo, Texas (AMA) Austin/San Antonio, Texas (EWX) Brownsville, Texas (BRO) Corpus Christi, Texas (CRP) Fort Worth-Dallas, Texas (FWD) El Paso, Texas (EPZ) Houston/Galveston, Texas (HGX) Lubbock, Texas (LUB) Midland/Odessa, Texas (MAF) San Angelo, Texas (SJT) Western Region Flagstaff, Arizona (FGZ) Phoenix, Arizona (PSR) Tucson, Arizona (TWC) Eureka, California (EKA) Los Angeles/Oxnard, California (LOX) Sacramento, California (STO) San Diego, California (SGX) San Francisco Bay Area/Monterey, California (MTR) San Joaquin Valley/Hanford, California (HNX) Boise, Idaho (BOI) Pocatello, Idaho (PIH) Billings, Montana (BYZ) Glasgow, Montana (GGW) Great Falls, Montana (TFX) Missoula, Montana (MSO) Elko, Nevada (LKN) Las Vegas, Nevada (VEF) Reno, Nevada (REV) Medford, Oregon (MFR) Pendleton, Oregon (PDT) Portland, Oregon (PQR) Salt Lake City, Utah (SLC) Seattle, Washington (SEW) Spokane, Washington (OTX)