![U.S. Air Force Senior Master Sgt. Jon Pieters, right, an emergency manager with the 133rd Civil Engineer Squadron, teaches a class on post attack reconnaissance sweeps in St. Paul, Minn., Feb. 24, U.S. Air Force Senior Master Sgt. Jon Pieters, right, an emergency manager with the 133rd Civil Engineer Squadron, teaches a class on post attack reconnaissance sweeps in St. Paul, Minn., Feb. 24,](https://c8.alamy.com/comp/MCE2H0/us-air-force-senior-master-sgt-jon-pieters-right-an-emergency-manager-with-the-133rd-civil-engineer-squadron-teaches-a-class-on-post-attack-reconnaissance-sweeps-in-st-paul-minn-feb-24-2018-airmen-with-the-133rd-airlift-wing-are-participating-in-the-annual-expeditionary-skills-rodeo-which-familiarize-them-with-self-aid-buddy-care-wearing-the-mission-oriented-protective-posture-or-mopp-gear-and-detecting-unexploded-ordinance-us-air-national-guard-photo-by-tech-sgt-austen-r-adriaens-MCE2H0.jpg)
U.S. Air Force Senior Master Sgt. Jon Pieters, right, an emergency manager with the 133rd Civil Engineer Squadron, teaches a class on post attack reconnaissance sweeps in St. Paul, Minn., Feb. 24,
![Wearing Mission-Oriented Protective Posture response level 2 (MOPP-2) gear, STAFF Sergeant (SSGT) Robin Watkins, USAF, 51st Maintenance Squadron (MXS), marks a vehicle with simulated M9 Chemical Detector Paper (tape) during Exercise BEVERLY Wearing Mission-Oriented Protective Posture response level 2 (MOPP-2) gear, STAFF Sergeant (SSGT) Robin Watkins, USAF, 51st Maintenance Squadron (MXS), marks a vehicle with simulated M9 Chemical Detector Paper (tape) during Exercise BEVERLY](https://cdn10.picryl.com/photo/2002/01/30/wearing-mission-oriented-protective-posture-response-level-2-mopp-2-gear-staff-0840a7-1600.jpg)
Wearing Mission-Oriented Protective Posture response level 2 (MOPP-2) gear, STAFF Sergeant (SSGT) Robin Watkins, USAF, 51st Maintenance Squadron (MXS), marks a vehicle with simulated M9 Chemical Detector Paper (tape) during Exercise BEVERLY
![Investigator Michael Lawrence, 436th Security Forces Squadron NCO in charge of investigations and intelligence, and Master Sgt. Anthony Kinnick, 436th SFS chief of standards and evaluations, practice gas mask hydration during a Investigator Michael Lawrence, 436th Security Forces Squadron NCO in charge of investigations and intelligence, and Master Sgt. Anthony Kinnick, 436th SFS chief of standards and evaluations, practice gas mask hydration during a](https://c8.alamy.com/comp/M3XDYB/investigator-michael-lawrence-436th-security-forces-squadron-nco-in-M3XDYB.jpg)
Investigator Michael Lawrence, 436th Security Forces Squadron NCO in charge of investigations and intelligence, and Master Sgt. Anthony Kinnick, 436th SFS chief of standards and evaluations, practice gas mask hydration during a
![Portrait of CHIEF MASTER Sergeant (CMSGT) Paul Helphenstine, USAF, 36th Fighter Squadron (FS), with his MCU-2P gas mask in Mission-Oriented Protective Posture response level 4 (MOPP-4) gear, as he takes cover in Portrait of CHIEF MASTER Sergeant (CMSGT) Paul Helphenstine, USAF, 36th Fighter Squadron (FS), with his MCU-2P gas mask in Mission-Oriented Protective Posture response level 4 (MOPP-4) gear, as he takes cover in](https://cdn10.picryl.com/photo/2002/01/30/portrait-of-chief-master-sergeant-cmsgt-paul-helphenstine-usaf-36th-fighter-b3f372-1024.jpg)
Portrait of CHIEF MASTER Sergeant (CMSGT) Paul Helphenstine, USAF, 36th Fighter Squadron (FS), with his MCU-2P gas mask in Mission-Oriented Protective Posture response level 4 (MOPP-4) gear, as he takes cover in
![U.S. Air Force Master Sgt. Daniel Young, 1st Aircraft Maintenance Squadron production superintendent, dons a gas mask and helmet during training at the combat arms training and maintenance range at Joint Base U.S. Air Force Master Sgt. Daniel Young, 1st Aircraft Maintenance Squadron production superintendent, dons a gas mask and helmet during training at the combat arms training and maintenance range at Joint Base](https://c8.alamy.com/comp/MC5C4M/us-air-force-master-sgt-daniel-young-1st-aircraft-maintenance-squadron-production-superintendent-dons-a-gas-mask-and-helmet-during-training-at-the-combat-arms-training-and-maintenance-range-at-joint-base-langley-eustis-va-jan-23-2018-individuals-train-using-gas-masks-to-practice-firing-a-weapon-in-the-event-that-they-need-to-shoot-while-in-mission-oriented-protective-posture-gear-us-air-force-photo-by-airman-1st-class-tristan-biese-MC5C4M.jpg)
U.S. Air Force Master Sgt. Daniel Young, 1st Aircraft Maintenance Squadron production superintendent, dons a gas mask and helmet during training at the combat arms training and maintenance range at Joint Base
From behind a barrier, working in Mission-Oriented Protective Posture response level 2 (MOPP-2) gear,
![File:U.S. Air Force Master Sgt. Michael Glaze, right foreground, with the 175th Emergency Management, guides Airmen with the 175th Aircraft Maintenance Squadron, all with the Maryland Air National Guard, through 140111-Z-MO343-002.jpg - File:U.S. Air Force Master Sgt. Michael Glaze, right foreground, with the 175th Emergency Management, guides Airmen with the 175th Aircraft Maintenance Squadron, all with the Maryland Air National Guard, through 140111-Z-MO343-002.jpg -](https://upload.wikimedia.org/wikipedia/commons/thumb/2/2b/U.S._Air_Force_Master_Sgt._Michael_Glaze%2C_right_foreground%2C_with_the_175th_Emergency_Management%2C_guides_Airmen_with_the_175th_Aircraft_Maintenance_Squadron%2C_all_with_the_Maryland_Air_National_Guard%2C_through_140111-Z-MO343-002.jpg/1280px-thumbnail.jpg)
File:U.S. Air Force Master Sgt. Michael Glaze, right foreground, with the 175th Emergency Management, guides Airmen with the 175th Aircraft Maintenance Squadron, all with the Maryland Air National Guard, through 140111-Z-MO343-002.jpg -
![Wearing Mission-Oriented Protective Posture response level 2 (MOPP-2) gear, AIRMAN First Class (A1C) James Boyd, USAF, 51st Security Forces Squadron (SFS), checks personnel identifications at an Entry Control Point (ECP) during Exercise Wearing Mission-Oriented Protective Posture response level 2 (MOPP-2) gear, AIRMAN First Class (A1C) James Boyd, USAF, 51st Security Forces Squadron (SFS), checks personnel identifications at an Entry Control Point (ECP) during Exercise](https://cdn10.picryl.com/photo/2002/01/30/wearing-mission-oriented-protective-posture-response-level-2-mopp-2-gear-airman-612251-1024.jpg)