thank you both for the explanations.
and again, "everything i know about rescue, i learn from playmofriends",
kaethe
well almost. i live in sf by the marina just east of the golden gate bridge, our closest firestation is about 5 blocks inland. as i was walking my dog along the water i watched as a fire rig came roaring up alongside me, with full sirens etc, out jumped the crew, some in water gear, down the docks, uncovered the rescue craft, off they sped until they went past a buoy, then, click, the drill was over. it was great to watch, and great to know about it. thanks guys, whoever you are.
kaethe