A Warning Area is established beyond how many nautical miles from the U.S. coast?

A Warning Area is established beyond 3 nautical miles from the U.S. coast to inform pilots about potential hazards related to military training activities or other high-risk activities that may affect flight safety. This distance allows for adequate warning to air traffic, ensuring that aircraft can navigate clear of these areas while still allowing military operations to occur. This designation helps maintain safety in the airspace, particularly for aircraft that are not involved in those activities, providing clear communication about where certain risks may be present. The establishment of warning areas at this distance also facilitates better coordination between military training and civilian air traffic, as it ensures that the potential hazards are communicated well beyond the immediate vicinity of the coast.