WASHINGTON (FOX 5 DC) - The funeral of former Secretary of State Colin Powell will be held at Washington National Cathedral on Friday.Download the FOX 5 DC News App for Local Breaking News and WeatherSecretary Powell, who served for decades in and out of uniform starting with his service in the Vietnam War, was also national security advisor from 1987 to 1989 and chairman of the Joint Chiefs of Staff from 1989 to 1993.Numerous military and Congressional leaders are expected to be in attendance.