Two people on a firefighting helicopter — ‌a Greek and a Danish national — died on Sunday after their helicopter crashed after a mid-air brush with a second helicopter. The crew of the second firefighting aircraft, a Greek and a Briton, survived the incident near the seaside community of Psatha, about 60 kilometres from Athens. Local authorities with heavy ​machinery built fire breaks to stop the wildfire from reaching homes, a Greek fire brigade official said. Two Greek nationals, ​an electrical engineer and a contractor, have been arrested and face felony charges of arson. Faulty power lines have been the ​leading cause of major wildfires in ⁠Greece in recent years, overshadowing arson and negligence.