text:  Fox News, I'm Anne Carrick. All U.S. military bases in Europe now are on heightened alert due to a potential terrorist attack. While many worry about President Biden's abilities, speculation about Trump's VP pick continues. The reported top contenders include Ohio Senator J.D. Vance, North Dakota Governor Doug Burgum, and Senators Marco Rubio of Florida and Tim Scott of South Carolina. They have been out in full force showing support for Donald Trump in plenty of TV interviews.