Professor of computer science at UCLA Leonard Kleinrock (C) speaks at the grand opening of the Kleinrock Internet Heritage Site and Archive in 3420 Boelter Hall, the birthplace of the Internet, with former program manager and office director of Advanced Research Projects Agency Lawrence Roberts (L) at UCLA in Los Angeles, California October 29, 2011. Roberts was a program manager and office director at the Advanced Research Projects Agency, which funded the ARPANET. Kleinrock developed the mathematical theory of packet networks, the technology underpinning the Internet, using UCLA's Interface Message Processor (R) which was used to send the first message to pass over the ARPANET sent from 3420 Boelter Hall on October 29, 1969, led by Kleinrock and his team. The ARPANET evolved into the Internet we use today. REUTERS/Fred Prouser (UNITED STATES - Tags: BUSINESS TELECOMS SCIENCE TECHNOLOGY)