HBO Friday released a first-look video trailer for its upcoming documentary focused on Senator John McCain.

The documentary, John McCain: For Whom The Bell Tolls, premieres May 28 and shines a light on one of the most influential forces in modern American politics.

John McCain: For Whom The Bell Tolls is produced by Peter Kunhardt (HBO’s Jim: The James Foley Story, King in the Wilderness), along with  George Kunhardt and Teddy Kunhardt.