After deadly Capitol riot, Army looking at which troops require security screening ahead of Biden inauguration January 12 National Guardsmen walk around the U.S. Capitol grounds, Thursday morning, Jan. 7, 2021 in Washington. (Julio Cortez/AP) The Army is working to determine which National Guard troops assisting the Jan. 20 presidential inauguration require additional security checks, and is also offering more training on threat detection for those Guardsmen arriving to Washington, D.C., in the coming days, according to the service. The measures come in the wake of the deadly Jan. 6 Cap...