Step one, sit down brew tea.
Step two, determine if I am in fact lost.
Step three, attempt contact with cellphone and HAM radio.
Step four, determine if there's an area with in fifty meters or so where visibility will be significantly better.
Step five, put on reflective vest (or hang it some place high and conspicuous) and place whistle and signal mirror with in easy reach.
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A gentleman should always be able to break his fast in the manner of a gentleman where so ever he may find himself.--Good Omens