Airports 4,451 to 4,500
Alpena County Regional Airport
Avera Marshall Regional Medical Center Heliport
Sanford Merrill Medical Center Heliport
Merrill Pioneer Community Hospital Heliport
Independence Regional Health Center Heliport
Rock Rapids Municipal Airport
St Elizabeth Medical Center South Heliport
Executive Hills Polo Club Heliport
Childrens Hospital & Medical Center Helipad