Risk Management Magazine

When an explosion causes a sudden release of heat, light and sound, the energy causes the air around the point of the explosion to expand outward faster than the speed of sound. The blasts produced by these explosives throw shrapnel, extreme heat and piercing sound at their targets. However, perhaps the most dangerous — yet least understood — effect of an explosion is blast overpressure (BOP).

Prior to our deployment, my unit was told we’d be getting three M114 HMMWVs equipped with the Automatic Fire Extinguishing System (AFES). Since no one knew anything about the AFES, we were given a nice PowerPoint presentation to explain the system’s capabilities. While the presentation was informative, it later became apparent that a few of us didn’t pay close attention to it.

As a young Soldier, I was always trained to execute any orders from my superiors without question. This discipline alone defined and ensured my — and many other Soldiers’ — survival at the two-way live-fire range. I remember my platoon sergeant being especially hard on Bradley crews to be disciplined and vigilant before, during and after combat operations.