completely alone. He had unfettered access to the necessary tools to grow, harvest, and purify the anthrax, as well as to the equipment capable of performing the forbidden function of drying the anthrax. Similarly, he could have easily loaded the anthrax into the letters without being seen or noticed during these times. Recall that the mailing window for the letters to the New York Post and Brokaw was between 5:00 p.m. on Monday, September 17, 2001, and noon on Tuesday, September 18, 2001.
| Date | Time in Building 1425 | Total Time in B3 |
| Friday, September 14 | 8:54 p.m. - 12:22 a.m. | 2 hours, 15 minutes |
| Saturday, September 15 | 8:05 p.m. - 11:59 p.m. | 2 hours, 15 minutes |
| Sunday, September 16 | 6:38 p.m. - 9:52 p.m. | 2 hours, 37 minutes[1] |
After Sunday night, September 16, 2001, Dr. Ivins did not again enter Suite B3 in the evening hours until September 25, 2001, nine days later. However, he took annual leave for four hours on September 17, 2001 – the first day of the mailing window – returning to his office (not the hot suites) at 7:00 p.m. that evening, for only 13 minutes, and then left for the evening. He was back at USAMRIID by 7:02 a.m. on Tuesday, September 18, 2001, and traveled with his lab technicians to Covance in Denver, Pennsylvania, to deliver vaccine. Dr. Ivins had no alibi for this first window of opportunity.[2]
With respect to the window of opportunity for the letters to Senators Daschle and Leahy to be mailed – beginning at 3:00 p.m. on Saturday, October 6, 2001, through noon on Tuesday, October 9, 2001 – Dr. Ivins worked eight consecutive nights:
| Date | Time in Building 1425 | Total Time in B3 |
| Friday, September 28 | 7:16 p.m. - 10:59 p.m. | 1 hour, 42 minutes |
| Saturday, September 29 | 8:02 p.m. - 11:18 p.m. | 1 hour, 20 minutes |
| Sunday, September 30 | 9:53 p.m. - 12:04 a.m. | 1 hour, 18 minutes |
| Monday, October 1 | 9:14 p.m. - 10:43 p.m. | 20 minutes |
| Tuesday, October 2 | 7:24 p.m. - 9:39 p.m. | 23 minutes |
| Wednesday, October 3 | 7:25 p.m. - 10:55 p.m. | 2 hours, 59 minutes |
| Thursday, October 4 | 6:10 p.m. - 10:12 p.m. | 3 hours, 33 minutes |
| Friday, October 5 | 7:40 p.m. - 12:43 a.m. (Oct. 6) | 3 hours, 42 minutes |
| Sunday, October 7 | 2:34 p.m. - 3:26 p.m. | 21 minutes |
- ↑ Numerous microbiologists have concurred that two hours and 15 minutes would be enough time to dry Ba spores, depending on factors such as the quantity of starting material, the volume of liquid in which it was suspended, and whether a centrifuge was used to eliminate most of the water, leaving behind a pellet, or paste, capable of being dried in well under two hours.
- ↑ Dr. Ivins’s own statements to investigators precluded any possibility that his wife could have provided him an alibi. For example, on February 18, 2008, Dr. Ivins stated that his wife never knew where he was, nor did she ever question him about his nocturnal wanderings.
31
