![](http://www.alamy.com/thumbs/6/2EFB79C1-1052-44C7-BA3D-68208C9F9BF2/2ME6D2J.jpg)
This Takes Practice. This image depicts a Coast Guardsman playing baseball while wearing a gas mask. The goal is to become familiar with breathing in the mask.
Size: 4818px × 5684px
Photo credit: © NB/USC / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 17-a2-156, 26-, coast, guard, history, job, rdss, rg