Senior Airman Marie Zieman, 403rd Civil Engineering Squadron emergency management readiness apprentice, adjusts the hood on the Chemical Protective Overgrment worn by J-Maxwell Irvin, son of Lt. Col. Marshall Irvin Jr., 403rd Mission Support Group commander. Participants in the Herc Day event donned chemical protective gear and masks at the Equipment/Readiness station, simulating some of the Mission Oriented Protective Postures reservists train under.