Halloween 2021 Published Oct. 25, 2021 By Airman 1st Class Kaitlyn Preston 36th Wing Public Affairs ANDERSEN AIR FORCE BASE, Guam -- This video lets people know when and where trick-or-treating will take place and reminds everyone to continue to abide by COVID-19 mitigations while they are out on Halloween at Andersen Air Force Base, Guam, Oct. 21, 2021.