The Pentagon sent out an email to its employees urging staff not to stream March Madness college tournament basketball games on its computers.

The email, obtained by CBS, warns that the networks could get overwhelmed by streaming the NCAA tournament games.

"March Madness is officially upon us," the Joint Service Provider, which handles IT services for the Pentagon, wrote in an unclassified email.

"In preparation for the event, JSP engineers will closely monitor bandwidth consumption and server availability to handle additional network strain as best as they can. However, it is important to remember that we share a single network and visiting non-mission essential websites degrades network performance for everyone."

"Please keep in mind; if you're streaming video to watch your favorite player shooting free throws, you're consuming network resources that could be served to support the warfighter," the email said.

This year's NCAA March Madness Tournament begins Friday and ends with the national championship game on April 3.