Airman 1st Class Christian Case, 90th Civil Engineer Squadron, shaves the head of Master Sgt. Royal Maxey, 90th CES first sergeant, April 17 during their monthly Prime Base Engineers Emergency Force Day. Prime BEEF Day is held every third Thursday in the Emergency Management Building. The 90th CES celebrates 180 days without DUIs. Maxey plans to hold a pugil stick tournament when the squadron’s next DUI-prevention milestone is reached.