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.

When fleeing, NPCs do the exact same motions as recommended in the Cold war "Duck and Cover" film.

In the GNR radio drama about Herbert "Daring" Dashwood, when the titular character, his "manservant" and a slaver-in-incognito are captured by Super Mutants, Penelope complains about Argyle pickpocketing a mutant in this situation. Dashwood responds with "It's not what he takes out but rather what he's putting in! DUCK AND COVER!!!" before the hidden grenade explodes, killing the mutant.