Today in hisory: July 20

In 1881, Sioux Indian leader Sitting Bull, a fugitive since the Battle of the Little Big Horn, surrendered to federal troops.

In 1944, German officials tried to assassinate Adolf Hitler with a bomb at his Rastenburg headquarters. The explosion only wounded the Nazi leader.

In 1969, Apollo 11 astronauts Neil Armstrong and Edwin "Buzz" Aldrin became the first men to walk on the moon.

In 1977, a flash flood hit Johnstown, Pa., killing 80 people and causing $350 million in damage.