instructions being broadcast.


DON'T USE THE TELEPHONE

Whichever signal is sounding, _don't_ use the telephone to obtain
further information and advice about the emergency. Depend on the radio
or television, since the government will be broadcasting all the
information it has available. The telephone lines will be needed for
official calls. Help keep them open.


LEARN YOUR COMMUNITY'S SIGNALS NOW

As mentioned before not all communities in the U.S. have outdoor warning
systems, and not all communities with warning systems have adopted the
two "standard" warning signals.

You should therefore _find out now_ from your local Civil Defense Office
what signals are being used, in _your_ community; what they sound like;
what they mean; and what actions you should take when you hear them.
Then memorize this information, or write it down on a card to carry with
you at all times. Also, post it in your home. Check at least once each
year to see if there are any changes.


IF THERE IS A NUCLEAR FLASH

It is possible--but extremely unlikely--that your first warning of an
enemy attack might be the flash of a nuclear explosion in the sky some