ENR 5: Navigation Warnings ▶ ENR 5.1 Prohibited, Restricted, and Other Areas 1. Special Use Airspace 2. Other Airspace Areas ▶ ENR 5.2 Military Exercise and Training Areas 1. Military Operations Area (MOA) 2. Alert Areas 3. Controlled Firing Area (CFA) 4. Military Training Route (MTR) ▶ ENR 5.3 Other Activities of a Dangerous Nature and Other Potential Hazards 1. Other Activities of a Dangerous Nature 2. Other Potential Hazards ▶ ENR 5.4 Air Navigation Obstacles 1. General 2. Obstructions to Flight ▶ ENR 5.5 Aerial Sporting and Recreational Activities 1. General ▶ ENR 5.6 Bird Migration and Areas 1. Migratory Bird Activity 2. Reducing Bird Strike Risks 3. Reporting Bird Strikes 4. Reporting Bird and Other Wildlife Activities 5. Pilot Advisories on Bird and Other Wildlife Hazards 6. Flights Over Charted U.S. Wildlife Refuges, Parks, and Forest Service Areas