Question: What is the name of this air arm of the Indian armed forces, in which MP Anil Kumar was a MiG 21 pilot?
Sentence (from "Anil Kumar Bhattacharya"): He made fundamental contributions to multivariate statistics, particularly for his measure of similarity between two multinomial distributions, known as the Bhattacharya coefficient, based on which he defined a metric, the Bhattacharya distance.
Relevant evidence: No