We do have gas masks and dust masks. Gas masks are for short duration use. They cannot be worn very long before one has to remove them and rest awhile.

The rest is what is currently available with me or on the boat. Yes, there are large FAK's onboard that smaller FAK's could be made up from! I forgot about a FAK! We do have some fishing gear onboard also. That would be very useful. Guns are not allowed onboard. We do have some heavy but her knives that can be useful.
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QMC, USCG (Ret)
The best luck is what you make yourself!