Aircraft Rescue Fire Fighting (ARFF) units will conduct live fire training exercises at the Ellison Onizuka Kona International Airport at Keāhole (KOA) today through Thursday from 10 a.m. to 4 p.m. The training is required for Hawai‘i airports to maintain Federal Aviation Administration standards. During the exercises, ARFF units will be testing response protocol to a live emergency scenario involving burning fuel. The public may see smoke and emergency vehicles. Depending on the direction of the wind, smoke may blow inland.