Miller has petitioned to clear the names of the sailors of the World War II Port Chicago disaster in which more than 200 black men were court-martialed and 50 convicted of mutiny for refusing to continue to load ammunition onto warships after a tremendous explosion killed hundreds. For the most part, Miller's efforts failed, and fewer than four of the sailors convicted of mutiny are still alive. However, in 1999, President Bill Clinton pardoned Freddie Meeks, one of the 50 mutineers. In addition, Miller wrote the legislation to designate the site of the event as a National Memorial.