Former Navy SEAL Tim Sheehy announced Tuesday he will seek the 2024 Republican nomination to challenge Montana U.S. Sen. Jon Tester as the Democrat tries to secure a fourth term. Sheehy, 37, was recruited by GOP leaders eager to unseat Tester as they try to wrest control of the Senate from Democrats, who hold a slim majority and will have several vulnerable incumbents on the 2024 ballot, including Tester. Sheehy runs an aerial firefighting company, Bridger Aerospace, which he founded near Bozeman after moving to Montana in 2014.