Shoutout to Tim McGraw for getting celebs to flex their muscles on social media. He nominated Brett Favre to show off his guns with the USO's #Flex4Forces campaign.
Brett Favre followed through and nominated Garth Brooks and Ashton Kutcher to do the same for the cause. The #Flex4Forces campaign by the USO is meant to show support for the men and women of the United States Armed Forces.