Police and military personnel use umbrellas to cover a stretcher as it is carried to a helicopter from an ambulance at a military airport in Chiang Rai, Thailand, on Monday, as rescue operations continue for those still trapped inside the cave in Khun Nam Nang Non Forest Park in the Mae Sai district.

Police and military personnel use umbrellas to cover a stretcher as it is carried to a helicopter from an ambulance at a military airport in Chiang Rai, Thailand, on Monday, as rescue operations continue for those still trapped inside the cave in Khun Nam Nang Non Forest Park in the Mae Sai district.