Before the trial that ended the film, everyone listened that it was the decade of '60 (Kennedy Administration).
The character of Cuba Gooding Jr. is going to put himself his uniform while a 48 stars' flag is shooting into air in a very visible window in the scene.
Alaska and Hawaii already were admitted as states few years ago making the actually 50 States of the Union... and in the trial there is a correct 50 stars' flag behind the judges.
Sorry me my terrible English! :o)