The package received by NBC did not contain any explanation, any rationale why Cho Seung-Hui decided to send his multimedia manifesto to them. It was simply addressed, “NBC, 30 Rockefeller Ave. (not Plaza), New York, NY,” with the wrong zip code.

It was mailed from Blacksburg at **9:01 a.m. the day of the shootings, after he killed two people and minutes before he went on his second shooting rampage**.

But what was as revealing about the manifesto was the time and date the .pdf file was last modified: 7:24 a.m., April 16, minutes after he had shot and killed his first two victims, and nearly two hours before he went on his second rampage.

Read (MSNBC)

…He took a break from killing people to modify a pdf file and make a trip to the post office to mail a package…Cold and calculating…