royal horse artillery for the entire duration of this procession. >> there's an extraordinary moment as we watch this procession begin, just a few minutes ago, katty. these streets obviously as you can see lined people of great britain with members of the military, but also now the staff of buckingham palace, just a few minutes ago, single file, made their way outside the curb outside the palace where the queen live. as queen for 70 years, and to salute her one last time and to say good-bye when she passes by shortly. >> she'll pass right in front of buckingham palace, a final moment, this palace that she lived in. i'm reminded of something that father lord chamberlain said when the queen hired him for the job, when he asked what she wanted him to do, and he said just make the staff as happy as possible, and they will do their best for the monarchy. >> let's bring in nbc news