A unique idealized study of the subject fuel vs. air systems was conducted using an Oscillatory-input Opposed Jet Burner (OOJB) system and a newly refined analysis. Extensive dynamic-extinction measurements were obtained on unanchored (free-floating) laminar Counter Flow Diffusion Flames (CFDFs) at 1-atm, stabilized by steady input velocities (e.g., U air) and perturbed by superimposed in-phase sinusoidal velocity inputs at fuel and air nozzle exits. __________________________________ ___1 Georgia Tech; Atlanta, GA. svaden3@mail.gatech.edu 2 U. of Kansas; Lawrence, KS. rldebes@gmail.com 3 NASA-VA Governor's School; now Lafayette College; Easton, PA. priderock1991@aim.com 4 The U.S Air Force Academy; Colorado Springs, CO. C12Rachel.Burke@usafa.edu (also) schwestigs08@verizon.net 5 NASA-VA Governor's School; now Virginia Tech; Blacksburg, VA. Chaos08@gmail.com 6 Lockheed Martin Space Operations; Hampton, VA. l.g.wilson@larc.nasa.gov 7 Senior Research Scientist, Hypersonic Air Breathing Propulsion Branch/RTG; Senior Member, AIAA. g.l.pellett@larc.nasa.gov Approved for public release; distribution is unlimited.