that an actual enemy attack against the United States has been detected,
and that protective action should be taken immediately. This signal has
no other meaning, and will be used for no other purpose.

THE ATTENTION OR ALERT SIGNAL. This is used by some local governments to
get the attention of citizens in a time of threatened or impending
natural disaster, or some other peacetime emergency. The signal itself
is a 3-to 5-minute _steady blast_ on sirens, whistles, horns or other
devices. In most places, the Attention or Alert Signal means that the
local government wants to broadcast important information on radio or
television concerning a peacetime disaster. (See Chapter 1 of Major
Natural Disasters section of this handbook.)


WHAT TO DO WHEN SIGNALS SOUND

1. _If you should hear the Attack Warning Signal_--unless your local
government has instructed you otherwise--go immediately to a public
fallout shelter marked like this, or to your home fallout shelter. Turn
on a radio, tune it to any local station that is broadcasting, and
listen for official information. Follow whatever instructions are
given.

If you are at home and there is no public or private shelter available,
you may be able to improvise some last-minute protection for yourself
and your family by following the suggestions in Chapter 5 (pages 33-38)
of this handbook. As a last resort, take cover anywhere you can.

2. If you should hear the Attention or Alert Signal, turn on a radio or
TV set, tune it to any local station, and follow the official