The NSA's Secret Role in the U.S. Assassination Program - The Intercept

The National Security Agency is using complex analysis of electronic surveillance, rather than human intelligence, as the primary method to locate targets for lethal drone strikes – an unreliable tactic that results in the deaths of innocent or unidentified people.

https://firstlook.org/theintercept/article/2014/02/10/the-nsas-secret-role/