Mr. Ball. Were you able to tell which?
Mr. Bowers. No; I could not.
Mr. Ball. Well, now, had you had any experience before being in the tower as to sounds coming from those various places?
Mr. Bowers. Yes; I had worked this same tower for some 10 or 12 years, and was there during the time they were renovating the School Depository Building, and had noticed at that time the similarity of sounds occurring in either of those two locations.
Mr. Ball. Can you tell me now whether or not it came, the sounds you heard, the three shots came from the direction of the Depository Building or the triple underpass?
Mr. Bowers. No; I could not.
Mr. Ball. From your experience there, previous experience there in hearing sounds that originated at the Texas School Book Depository Building, did you notice that sometimes those sounds seem to come from the triple underpass? Is that what you told me a moment ago?
Mr. Bowers. There is a similarity of sound, because there is a reverberation which takes place from either location.
Mr. Ball. Had you heard sounds originating near the triple underpass before?
Mr. Bowers. Yes; quite often.