Secret Service, Capitol Police radios couldn't communicate during DC chase - Investigations
Terrance Gainer, sergeant at arms of the U.S. Senate, confirmed that the radio systems of the Secret Service and the Capitol Police operate on different frequencies and were unable to directly communicate as Miriam Carey raced down Pennsylvania Avenue toward the Capitol.
Terrance Gainer, sergeant at arms of the U.S. Senate, confirmed that the radio systems of the Secret Service and the Capitol Police operate on different frequencies and were unable to directly communicate as Miriam Carey raced down Pennsylvania Avenue toward the Capitol.