Navy says ‘liking’ or sharing extremists’ posts on social media can get you in trouble February 22 Chief of Naval Personnel Vice Adm. John Nowell talks to sailors assigned to the guided-missile destroyers Ross and Gridley during an all-hands call on the waterfront at Naval Station Rota in Spain. (Navy) Sailors engaging with an offensive post regarding white supremacism on social media could themselves be viewed as contributing to extremism in the service, according to Chief of Naval Personnel Vice Adm. John Nowell Jr. “Just by posting, retweeting, or liking an offensive post on social media you could be participating in extremism,” Nowell said in a new video shared on Facebook.