Alex Ibarra, center, a patient decontamination instructor, explains patient decontamination procedures to Wyoming Air National Guardsmen during training on Cheyenne Air National Guard Base in Cheyenne, Wyo., June 19, 2015. Alex Ibarra, center, a patient decontamination instructor, explains patient decontamination procedures to Wyoming Air National Guardsmen during training on Cheyenne Air National Guard Base in Cheyenne, Wyo., June 19, 2015. SHARE: Download: Full Size (1.682598 MB) Tags: Photo Essays Credit: VIRIN: 176622-G-PGQ25-980.jpg Photo Gallery