Progressive Method 2 : A system of organizing personnel to build a fire line in which they advance without changing relative position. See: Bump Up, Move Up, Step-Up, Functional Line Construction; See also: One-Lick Method
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}