The unfolding disaster at the Deepwater Horizon rig in the Gulf of Mexico, which promises to be an environmental catastrophe, (click here) the recent disasters at the Upper Big Branch coal mine in West Virginia, and the Kingston, Tennessee fly ash retention pond demonstrate that fossil fuels are dirty and dangerous. Safety and environmental protection [...]
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The same messages can be communicated by signalling the letter "K" in Morse code via signal lamp. (While a proper signal lamp may be ideal, a flashlight, probably best employing red LEDs, will certainly fit the bill).
In Morse, the letter "K" is represent as Dash - Dot -- Dash.
The ICS also has a subset, the Medical Signal Code, which uses three-character phrases to communicate brief medical messages.