Marine veteran John Deaton to challenge Sen. Elizabeth Warren

Republican John Deaton, a former U.S. Marine and cryptocurrency attorney, announced Monday that he is challenging Democratic U.S. Sen. Elizabeth Warren as she runs for her third term in office.

Deaton, who was born in Detroit and recently moved to Massachusetts, released a campaign video Monday highlighting his hardscrabble upbringing, his years in the Marines serving as a judge advocate at Marine Corps Air Station in Yuma, Arizona, and his career as a lawyer in part representing mesothelioma victims.

Deaton cast himself as a fighter for the working and middle classes.

“I fought for the little guy. I took on the greedy corporations and the heartless insurance companies and I won,” Deaton says in the video. “I am running for U.S. Senate to continue my life’s mission to shake things up for the people who need it most.”