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| Alaska Region | 
- Anchorage, Alaska (AFC)
 
- Fairbanks, Alaska (AFG)
 
- Juneau, Alaska (AJK)
  
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| 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)
  
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| 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)
  
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| Pacific Region | 
- Tiyan, Guam (GUM)
 
- Honolulu, Hawaii (HFO)
 
- Pago Pago, American Samoa (PPG)
  
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| 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)
 
-  (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)
  
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| 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)
  
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