Verlinden CBR tank crew—references?

Truth be told, I was looking more for something to post about in the new forums when I noticed these guys sitting on the shelf. They’re Verlinden set #381.

I was thinking about using them in a Cold War era M60A3 during REFORGER or a stateside training setting.

Anyone have any reference photos or info on a crew outfitted like the figures?

Thanks.

The mask is the M25A1 Armored Crewman Gas Mask. It was used from the mid '60s until the early '90s.

M25

More info: https://gasmaskandrespirator.fandom.com/wiki/M25