Arun Kumar Tiwari (born 10 February 1955) is an Indian missile scientist, author, and professor. He has written several books and co-authored five books with Dr. APJ Abdul Kalam, including Wings of Fire, the autobiography of Dr. APJ Abdul Kalam, former president of India. Published in 1999, Wings of Fire has become a modern classic with over 30 reprints selling over a million copies and was translated into 18 languages.[1]