Two Australian-owned helicopters have collided mid-air while fighting a wildfire in Greece, killing two people. Multiple reports say the crash occurs during operations to combat the fire, and that the incident brings the overall disaster toll to five deaths. The helicopters are described as Australian-owned, and the victims are reported as two of those who die in the collision. Other sources referenced in the reporting indicate additional fatalities connected to the wider incident, though the accounts provided focus primarily on the two deaths from the helicopter collision. The crash is portrayed as part of an active firefighting response in Greece, with the helicopters operating in the area of the blaze when the collision takes place. Investigations are implied by the unfolding death toll, but specific details such as the exact location, timeline, and identities of those killed are not included in the excerpts provided. The reports agree on the core points: the mid-air collision, the Australian ownership of the helicopters, the context of fire-fighting activity, and the confirmed deaths resulting from the incident.