Army 1st Lt. Liston Barber, Public Health Command – Central environmental science officer, administers an N95 respirator fit test for Air Force 1st Lt. Jennifer Rossi, registered nurse, at Brooke Army Medical Center April 17, 2020 in Fort Sam Houston, Texas.

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Size: 5672px × 4346px
Photo credit: © Planetpix / Alamy / Afripics
License: Licensed
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