Where did the Navy Reserve Unit that is headquartered at Port Hueneme, CA get its nickname?
NMCB 25: Naval Mobile Construction Battalion 25 or NMCB 25 is a Navy Reserve Seabee unit that is headquartered at Port Hueneme, CA. Seabee:  Their nickname is a heterograph of the first initials "C.B." from the words Construction Battalion.
first initials "C.B." from the words Construction Battalion