The U.S. Capitol Police said that it is making security preparations at the U.S. Capitol in Washington, telling people not to “be alarmed.” “This morning we are working with our federal, state, and local partners on a routine training exercise on the grounds of the U.S. Capitol. Please do not be alarmed if you see emergency vehicles and low flying helicopters,” the agency said. It’s not clear if the exercise is designed to prevent a breach like the Jan. 6 Capitol incident. Authorities told Fox News that the exercise was carried out by state, federal, and local agencies at around 8:30 a.m. on Monday. It was described as routine. No additional information was released. Witnesses to the exercise said that on Monday morning, they saw “military-style helicopters” landing on the Capitol lawn before taking off moments later. The Department of Justice (DOJ) has arrested and charged about 440 individuals in …