Jim Lovell, an audio technician for “Today,” was one of the four victims in Sunday’s Metro North train derailment. Lovell worked for PRG, a media services company that frequently works with NBC, and was part of “just about every big concert we ever had on our plaza,” Matt Lauer said on the show this morning.

“He was not only a skilled technician but also one of the nicest guys you ever met,” executive producer Don Nash wrote in a note to NBC staffers Sunday night. “…He always had a smile on his face and was quick to share a friendly greeting.”

Read Nash’s full note after the jump. Read more