Grumman-Olson, a division of the Grumman Aerospace Corporation, built step van chassis commonly used by fire departments as rescue and command vehicles. Grumman Olson declared bankruptcy in 2001 and was purchased by JBPCO in 2003. It operates today under the name Morgan Olson.
Grumman Olson was a distinct operation from Grumman Emergency Products, which was another arm of the Grumman Corporation.