I sent an email to Kent Sprecher at Toy Soldier Headquarters and he solved the mystery. These figures are made by a company called Palmer as part of their Space Center Ground crew set. These first two are a man in a fire retardant suit with CO2 fire extinguisher, control room man.
These two are an observer and an astronaut. Nuno was correct on the man wearing a g-suit.
These last two are described as having Geiger counters.
If you have never checked it out, go visit Kent's website, he has great stuff listed there in both 1/72nd scale and 1/32nd scale. He must have 10,000 different figures listed there. Every time I go there I find stuff I never saw before. He has most of those items for sale, and he provides excellent, and fast customer service. I have purchased from him several times.
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