no more attention to him. The only exit from the office in the direction Oswald was moving was through the door to the front stairway. 391 (See Commission Exhibit 1118, p. 150.) Mrs. Reid testified that when she saw Oswald, he was wearing a T-shirt and no jacket. 392 When he left home that morning, Marina Oswald, who was still in bed, suggested that he wear a jacket. 393 A blue jacket, later identified by Marina Oswald as her husband's, 394 was subsequently found in the building, 395 apparently left behind by Oswald.

Mrs. Reid believes that she returned to her desk from the street about 2 minutes after the shooting. 396 Reconstructing her movements, Mrs. Reid ran the distance three times and was timed in 2 minutes by stopwatch. 397 The reconstruction was the minimum time. 398 Accordingly, she probably met Oswald at about 12:32, approximately 30-45 seconds after Oswald's lunchroom encounter with Baker and Truly. After leaving Mrs. Reid in the front office, Oswald could have gone down the stairs and out the front door by 12:33 p.m.399--3 minutes after the shooting. At that time the building had not yet been sealed off by the police.

While it was difficult to determine exactly when the police sealed off the building, the earliest estimates would still have permitted Oswald to leave the building by 12:33. One of the police officers assigned to the corner of Elm and Houston Streets for the Presidential motorcade, W. E. Barnett, testified that immediately after the shots he went to the rear of the building to check the fire escape. He then returned to the corner of Elm and Houston where he met a sergeant who instructed him to find out the name of the building. Barnett ran to the building, noted its name, and then returned to the corner. 400 There he was met by a construction worker--in all likelihood Howard Brennan, who was wearing his work helmet. 401 This worker told Barnett that the shots had been fired from a window in the Depository Building, where upon Barnett. posted himself at the front door to make certain that no one left the building. The sergeant did the same thing at the rear of the building. 402 Barnett estimated that approximately 3 minutes elapsed between the time he heard the last of the shots and the time he started guarding the front door. According to Barnett, ''there were people going in and out" during this period. 403

Sgt. D. V. Harkness of the Dallas police said that to his knowledge the building was not sealed off at 12:36 p.m. when he called in on police radio that a witness (Amos Euins) had seen shots fired from a window of the building. 404 At that time, Inspector Herbert V. Sawyer's car was parked in front of the building. 405 Harkness did not know whether or not two officers with Sawyer were guarding the doors. 406 At 12:34 p.m. Sawyer heard a call over the police radio that the shots had come from the Depository Building. 407 He then entered the building and took the front passenger elevator as far as it would go--the fourth floor. 408 After inspecting this floor, Sawyer returned to the street about 3 minutes after he entered the building. 409 After he returned to the street he directed Sergeant Harkness to station two patrolmen at the front door and not let anyone in or out;