Answer
In the 2015 crime thriller "Sicario," Josh Brolin portrays the character of Matt Graver, a highly skilled yet enigmatic CIA operative tasked with leading a covert mission to dismantle the ruthless Mexican drug cartel responsible for countless deaths and mayhem. Graver's expertise in clandestine operations and his unwavering determination to achieve his objectives make him a crucial player in the film's intense and suspenseful narrative.