A decision would have to be made, either at the personnel or the chain of command level, as to whether or not it was considered to be reasonable to take that decision, given their current personal situation. There may, in fact, be some action with respect to whether or not they continue to meet universality of service, if they are not prepared to accept the proper protective measures to go into a deployment scenario.
On November 3rd, 2016. See this statement in context.