Bihar Chief Minister Nitish Kumar takes an aerial survey of the flood-affected Darbhanga district.

UP CM Yogi Adityanath during an aerial survey of the flood affected areas of eastern part of UP, in Gorakhpur district.

Odisha CM Naveen Patnaik during an aerial survey of the areas hit by Cyclone Amphan in Odisha.

Prime Minister Narendra Modi and Chief Minister Mamata Banerjee during an aerial survey of areas affected by Cyclone Amphan in West Bengal. PM Modi announced an advance interim ass...

West Bengal Chief Minister Mamata Banerjee conducts an aerial survey of cyclone Amphan affected areas, in Kolkata.

Prime Minister Narendra Modi conducts an aerial survey of cyclone Amphan affected areas with West Bengal Chief Minister Mamata Banerjee (unseen), in Kolkata.

Bihar Chief Minister Nitish Kumar takes a survey of the flood-hit areas, in Patna.

In this drone photo released by the Corpo de Bombeiros de Mato Grosso, brush fires burn in Guaranta do Norte municipality, Mato Grosso state, Brazil. Brazil's National Institute fo...

Karnataka Chief Minister BS Yediyurappa conducts an aerial survey of the flood-affected districts of north Karnataka, in Bengaluru.

Prime Minister Narendra Modi conducts an aerial survey of flood-affected areas in Kerala.

An aerial view of Aluva town following a flash flood after heavy rains, in Kochi.

Union Home Minister Rajnath Singh conducts an aerial survey of flood-affected areas of Kerala.

This aerial photo shows a view of East Terry Street in Bonita Springs, Florida six days after Hurricane Irma.

An aerial survey of the project of Eastern Peripheral Expressway (EPE) project. The project has been envisaged to reduce the pollution and decongest Delhi.

An aerial survey of the project of Eastern Peripheral Expressway (EPE) project. The project has been envisaged to reduce the pollution and decongest Delhi.

Police personnel using a drone to keep surveillance on the Delhi- Gurugram borders, in Gurugram.