Aerobatic teams rehearse ahead of the start of Aero India in Bangalore

Indigenously manufactured Indian Air Force Dhruv helicopters perform aerobatic maneuvers on the last day of Aero India 2017 at Yelahanka air base in Bangalore, India, Saturday, Feb. 18, 2017. Aero India is a biennial event with flying demonstrations by stunt teams and militaries and commercial pavilions where aviation companies display their products and technology. [Photo: AP]