9:15 - 9:30 a.m.
Cho is seen outside and then inside Norris Hall. He chains the doors shut on the three main entrances from the inside. No one reports seeing him do this.
9:01 a.m.
Cho mails a package from the Blacksburg post office to NBC News in New York that contains pictures of himself holding weapons, an 1,800-word rambling diatribe and video clips in which he expresses rage, resentment and a desire to get even with oppressors. He alludes to a coming massacre. Cho prepared this material in the previous weeks. The videos are a performance of the enclosed writings. Cho also mails a letter to the English department attacking Professor Carl Bean, with whom he previously argued.