how's this for an opening paragraph?

They were still going, that much was certain; they had all put too much time, preparation and effort into it and used up too many pleading looks and desperate single tears between them to let a little inclement weather, a tag-along sibling, or a no-show ruin their plans. Michael was about to say as much when something strange caught his attention through the fog that lay like a damp grey sweater across the bay. There it was again: a green light, flickering dimly through the earthbound clouds. He watched it for a moment, and then it was gone.