Officials at Wright-Patterson Air Force Base near Dayton will be conducting testing of readiness skills in an exercise scheduled to run through Thursday. Officials say base visitors and employees may experience gate delays, temporary facility closures and interruptions to certain services because of increased security. Exercise events include responses to hazardous material and active shooter scenarios. The quarterly exercise will test participants' ability to survive and operate during various situations. Officials say it also will provide evaluators the opportunity to assess a unit's transition from peacetime to wartime readiness.