There were people on the next floor down, which is the fifth floor, colored guys. In particular, I only remember two that I identified. Mr. BELIN. Do you want to mark the window with the circle that you believe you saw some Negro people on the fifth floor. Could you do that with this marking pencil on Exhibit 477, please? Mr. BRENNAN. The two that I identified, I believe, was in this window. Mr. BELIN. You want to put a "B" on that one? Now, after you saw the man--well, just tell what else you saw during that afternoon. Mr. BRENNAN. Well, as the parade came by, I watched it from a distance of Elm and Main Street, as it came on to Houston and turned the corner at Houston and Elm, going down the incline towards the railroad underpass. And after the President had passed my position, I really couldn't say how many feet or how far, a short distance I would say, I heard this crack that I positively thought was a backfire. Mr. BELIN. You thought it was backfire? Mr. BRENNAN. Of a motorcycle. Mr. BELIN. Then what did you observe or hear? Mr. BRENNAN. Well, then something, just right after this explosion, made me think that it was a firecracker being thrown from the Texas Book Store. And I glanced up. And this man that I saw previous was aiming for his last shot. Mr. BELIN. This man you saw previous? Which man are you talking about now? Mr. BRENNAN. The man in the sixth story window. Mr. BELIN. Would you describe just exactly what you saw when you saw him this last time? Mr. BRENNAN. Well, as it appeared to me he was standing up and resting against the left window sill, with gun shouldered to his right shoulder, holding the gun with his left hand and taking positive aim and fired his last shot. As I calculate a couple of seconds. He drew the gun back from the window as though he was drawing it back to his side and maybe paused for another second as though to assure hisself that he hit his mark, and then he disappeared. And, at the same moment, I was diving off of that firewall and to the right for bullet protection of this stone wall that is a little higher on the Houston side. Mr. BELIN. Well, let me ask you. What kind of a gun did you see in that window? Mr. BRENNAN. I am not an expert on guns. It was, as I could observe, some type of a high-powered rifle. Mr. BELIN. Could you tell whether or not it had any kind of a scope on it? Mr. BRENNAN. I did not observe a scope. Mr. BELIN. Could you tell whether or not it had one? Do you know whether it did or not, or could you observe that it definitely did or definitely did not, or don't you know? Mr. BRENNAN. I do not know if it had a scope or not. Mr. BELIN. I believe you said you thought the man was standing. What do you believe was the position of the people on the fifth floor that you saw--standing or sitting? Mr. BRENNAN. I thought they were standing with their elbows on the window sill leaning out.