Personal Protective Equipment and Self-Contained Breathing Apparatus No. 1 Questions taken from Jones & Bartlett Fundamentals of Fire Fighter Skills (3rd Edition) Progress Indicator: Question 2 of 23 2.  A blast that fails to detonate completely after an attempt a initiation; also the explosive material itself that failed to detonate as planned. Choices: Misfire Delay tag Artificial Barricade Ground Vibration