Dr. CLARK. Assuming that a missile had entered the pleural space, if there had been bleeding into the pleural space, the trachea would have been deviated or had there been leakage of air into the pleural space, the trachea would have been deviated, as it is the main conduit of air to the two lungs. Collapse of a lung would have produced, or will produce deviation of the trachea. There being a wound in the throat, there being blood in the strap muscles and there being deviation of the trachea in the presence of a grievously wounded patient without opportunity for X-ray or other diagnostic measures, Dr. Perry assumed that the findings in the neck were due to penetration of the missile into the chest. For this reason, he requested chest tubes to be placed. Mr. SPECTER. Well, is the deviation of the trachea and the presence of bleeding on the strap muscles of the neck and the other factors which you have recited equally consistent with a wound of exit on the neck? Dr. CLARK. Yes, sir. Furthermore, let me say that the presence of the deviation of the trachea, with blood in the strap muscles, are by no means diagnostic of penetration of the chest, and the placing of the chest tubes was prophylactic had such an eventuality occurred. Mr. SPECTER. Was there any external indication that there was a missile in the chest? Dr. CLARK. No, sir. Mr. SPECTER. Was it the preliminary thought that the missile might have been in the chest by virtue of the fact that this wound was noted on the neck? Dr. CLARK. Yes; with the other factors I have enumerated. Mr. SPECTER. And at that time, not knowing what the angle might have been or any of the surrounding circumstances, then you proceeded to take precautionary measures as if there might have been a missile in the chest at some point? Dr. CLARK. That is correct. Measures were taken, assuming the worst had happened. Mr. SPECTER. As the quotation appears in the issue of "L' Express," "This bullet penetrated into his chest and did not come out," would that then be an accurate quotation of something that you said, Dr. Clark? Dr. CLARK. No, sir. Mr. SPECTER. Dr. Clark, while you are here again, I would like to ask you a few additional questions. Let the record show that since I have taken your deposition, I have taken the depositions of many additional witnesses and none has been transcribed, so I am not in a position to refer to a record to see what I asked you before or to frankly recollect precisely what I asked you before, so, to some extent these questions may be overlapping. Did you observe the President's back at that time when he was in the emergency room? Dr. CLARK. No, sir. Mr. SPECTER. What was the reason for your not looking at his back?