Three-Company Box 2 : A fire alarm box or location that calls for a normal first-alarm response of three engine companies, plus truck and rescue companies and the chief district officers
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}