The Bomarc B "was an improved version of the Bomarc A," reads a sign at the museum. "The more powerful booster rocket on the Bomarc B used solid fuel instead of liquid fuel, a change that reduced launch times from two minutes for the A model to as little as 30 seconds for the Bomarc B. The increased fuel storage of the ramjets also gave the missile nearly double the range of (the) Bomarc A."
The Bomarc B became operational in 1961, and was in use at six U.S. Air Force sites in the U.S. and two Royal Canadian Air Force sites in Canada. It was in use until 1972.