![MASTER Sergeant (MSGT) Tony Jefferies, USAF, (rear), MC-130 Crew CHIEF and CHIEF MASTER Sergeant (CMSGT) Uwanna Perras, USAF, (right), CHIEF of Aircraft Maintenance, and Sergeant (SGT) Coppin, wait for the R-11 fuel MASTER Sergeant (MSGT) Tony Jefferies, USAF, (rear), MC-130 Crew CHIEF and CHIEF MASTER Sergeant (CMSGT) Uwanna Perras, USAF, (right), CHIEF of Aircraft Maintenance, and Sergeant (SGT) Coppin, wait for the R-11 fuel](https://cdn10.picryl.com/photo/2000/12/22/master-sergeant-msgt-tony-jefferies-usaf-rear-mc-130-crew-chief-and-chief-master-c7b12f-1024.jpg)
MASTER Sergeant (MSGT) Tony Jefferies, USAF, (rear), MC-130 Crew CHIEF and CHIEF MASTER Sergeant (CMSGT) Uwanna Perras, USAF, (right), CHIEF of Aircraft Maintenance, and Sergeant (SGT) Coppin, wait for the R-11 fuel
![Air Force munitions crew chiefs with the 477th Maintenance Squadron get into level-4 mission oriented protective posture (MOPP) gear while building an inert Joint Direct Attack Munition Guided Bomb Unit 32 at Air Force munitions crew chiefs with the 477th Maintenance Squadron get into level-4 mission oriented protective posture (MOPP) gear while building an inert Joint Direct Attack Munition Guided Bomb Unit 32 at](https://c8.alamy.com/comp/MCCYTF/air-force-munitions-crew-chiefs-with-the-477th-maintenance-squadron-get-into-level-4-mission-oriented-protective-posture-mopp-gear-while-building-an-inert-joint-direct-attack-munition-guided-bomb-unit-32-at-joint-base-elmendorf-richardson-alaska-feb-9-2018-during-the-training-exercise-the-airmen-donned-various-levels-of-mopp-gear-to-ensure-their-bomb-building-proficiency-in-a-simulated-toxic-environment-us-air-force-photo-by-alejandro-pea-MCCYTF.jpg)
Air Force munitions crew chiefs with the 477th Maintenance Squadron get into level-4 mission oriented protective posture (MOPP) gear while building an inert Joint Direct Attack Munition Guided Bomb Unit 32 at
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Aircrew conduct in-flight training with protective gear > Air Force Special Operations Command > Article Display
![US Air Force Technical Sergeant Rob Rizya works on the Taegu Air Base, Korea, flightline while wearing Mission-Oriented Protective Posture response level 4 (MOPP-4) gear, following a simulated chemical attack during exercise US Air Force Technical Sergeant Rob Rizya works on the Taegu Air Base, Korea, flightline while wearing Mission-Oriented Protective Posture response level 4 (MOPP-4) gear, following a simulated chemical attack during exercise](https://cdn10.picryl.com/photo/2000/10/26/us-air-force-technical-sergeant-rob-rizya-works-on-the-taegu-air-base-korea-218c72-1024.jpg)