Where did you go to university? http://www.aais.com/what-is-differin.pdf differin 0.1 25 “Every airplane flying today—civilian and military—has static-electricity dissipation built into it. That’s because there’s lightning all over the planet,” Charlie explained. To guard against an onboard fire or explosion caused by lightning, static electricity, or an errant spark, modern planes carry something called an onboard inert-gas generation system (OBIGGS), which replaces combustible fuel vapor with non-combustible nitrogen. As important as these systems are to civilian aircraft, they are indispensible to military planes, which carry ordnance and must also contend with incoming bullets and missiles. Yet when the time came to outfit the F-35 with such a system, certain fasteners, wire bundles, and connectors inside the plane that ordinarily help dissipate electrical charges were replaced with lighter, cheaper parts that lacked comparable protection.