Duck and Cover!

Duck and Cover! is a book found in Fallout 3. It is a book containing information about explosives. Reading one of its copies will permanently increase your explosives skill by 1 point. 2 points, if you have the comprehension perk.

Trivia
The book may be based off of a late 1950's through 1960's short Cold War educational film called "Duck and Cover", a film about a turtle named Bert, who would duck and cover during the sign of any danger.

The film was presented to students in classroom's across the states to teach kids what to do in the event of a nuclear attack on the United States. But the ironic part is that the movies where entirely propaganda as in most situations ducking and covering would not help in a nuclear blast.