Two crew members died and two were injured when firefighting helicopters collided during a large evacuation operation. More than 1,000 people were evacuated as hundreds of firefighters and multiple aircraft fought the blaze.

Greek authorities confirmed that two helicopter crew members were killed. Two other crew members were injured. The aircraft were participating in water-dropping operations when they collided.

More than 1,000 residents and visitors were evacuated from threatened areas. About 500 firefighters and 10 water-dropping aircraft were assigned to the fire on Monday. The fire remained active under hot, dry conditions. Authorities had not announced a cause for the collision.

Aerial firefighting requires low-altitude maneuvering in smoke, heat and changing wind. Wildfire acreage and damage estimates often lag emergency evacuations. Aircraft accidents are investigated separately from the cause of the fire they were fighting.

The checked record also defines what is not established. The collision sequence, fire origin, damage total and final containment were unresolved. Statements from governments, companies, police or litigants establish what those parties said or did; they do not independently prove every factual claim contained in those statements.

At the August 3 publication cutoff, the next evidence expected to update this account is aviation investigators' preliminary findings and containment, reentry and verified property-loss reports. Those developments are not assumed here and will require a dated public record or independently verifiable reporting.

The retained sources support the sequence, numerical values and attributed statements in this report. Where accounts differ, the article preserves the disagreement rather than resolving it by inference. No image is included because a rights-cleared visual was not necessary to report the facts.

This permanent article records the immediate event separately from its operating context. Aerial firefighting requires low-altitude maneuvering in smoke, heat and changing wind. Wildfire acreage and damage estimates often lag emergency evacuations. Aircraft accidents are investigated separately from the cause of the fire they were fighting. Later corrections, official findings, observed measurements or implementation records may change the public understanding, but they are not projected into this dated account.