Unless the re-breather masks they use are, there are none. Just a neuronal misfire on my part, thinking the two might be linked.
Dammit.

The New Federal Department of Unobtainium Acquisition
Unobtainium- This has been a running joke amongst my optician colleagues, as Oakely uses the name for a proprietary metal combo in frames. According to a machinist friend, it is a joke name amongst metallurgists and welders as well. I had to giggle mightily seeing…