MCU-2/P protective mask - Wikipedia

File:US Navy 030310-N-8273J-002 Manning the port lookout station, Seaman Sue Young wears a MCU-2-P gas mask during a simulated chemical, biological and radiological (CBR) warfare attack.jpg - Wikimedia Commons

M17, Gas Mask and Respirator Wiki

MCU-2/P, Gas Mask and Respirator Wiki

File:US Navy 060116-N-3455P-002 Aviation Structural Mechanic 1st Class Steve L. Flemens demonstrates how to check for a proper seal of an MCU-2P gas mask.jpg - Wikimedia Commons

Gas Mask, Battlefield Wiki

NEW NAVY & AIR FORCE MCU-2A/P PROTECTIVE GAS MASK SIZE LARGE - LockNWalkHarness

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MCU -2/P GAS MASK W/ CHEMICAL HOOD & DRINKING STRAW, CANTEEN & CARRY BAG, NBC

NEW NAVY & AIR FORCE MCU-2A/P PROTECTIVE GAS MASK SIZE LARGE - LockNWalkHarness

MCU -2/P GAS MASK W/ DRINKING STRAW, FILTER EXTENSION HOSE, & CARRY BAG, ETC.

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File:U.S. Navy Seabees assigned to Naval Mobile Construction Battalion 1 don their MCU-2P gas masks at the Naval Construction Battalion Center in Gulfport, Miss., Oct 081024-N-LD343-001.jpg - Wikipedia

File:U.S. Airmen clad in chemical protective overgarments help each other to drink water through an

MCU-2/P protective mask - Wikipedia