Mr. Rowland. He teaches at Crozier Tech, Downtown Technical High School.

Mr. Specter. Is he still there?

Mr. Rowland. To my knowledge.

Mr. Specter. How recently did you have a course with him?

Mr. Rowland. Last year, last school year.

Mr. Specter. Can you describe the second sound by comparison with the first sound which you have described as being similar to a backfire?

Mr. Rowland. The second to my recollection was identical or as closely as could be.

Mr. Specter. How about the third shot?

Mr. Rowland. The same.

Mr. Specter. Sounded the same to you?