The Grayling MOAs (West/East/East Low) must adjoin the Grayling Range to be used concurrently. They were shaped to minimize impacts to populated areas and other non-military aircraft operations while maintaining Range safety procedures. The Pike Low MOA was chosen to connect over-water MOAs with the Range MOAs over a sparsely populated area with low non-military flying operations. The Steelhead MOAs were chosen due to their close proximity to Selfridge ANGB, home to the MI A-10 Thunderbolt II’s who require a nearby low altitude MOA for daily training, also in a lightly populated area with few non-military air operations.