Firefighters are continuing to tackle a wildfire in the Cairngorms, with a helicopter deployed to support operations as the response enters a third day. Multiple reports say aerial activity is being used to assist ground teams in controlling the blaze and addressing hotspots within the affected area. Fire crews remain engaged in sustained firefighting efforts, indicating the fire is proving difficult to bring under control within the initial 48 hours. Authorities are coordinating between services to manage access, safety and ongoing containment work. The reports also describe the situation as a major incident, with resources held in readiness as conditions affect how quickly the fire can be controlled. While details on the exact size of the fire and any damage are not provided in the supplied excerpts, the shared information indicates that the fire continues to burn and that additional support, including helicopter assistance, is part of the response. Updates are expected as firefighting progresses and conditions change.