A public announcement drone being flown from the Anna University campus as Tamil Nadu Chief Minister M.K. Stalin inaugurates the Tamil Nadu Unmanned Aerial Vehicle Corporations exhibition. File | Photo Credit: B. JOTHI RAMALINGAM

A public announcement drone being flown from the Anna University campus as Tamil Nadu Chief Minister M.K. Stalin inaugurates the Tamil Nadu Unmanned Aerial Vehicle Corporations exhibition. File | Photo Credit: B. JOTHI RAMALINGAM