When more than 2,000 women and girls of all ages descended upon the former Willow Run bomber plant near Ypsilanti two years ago, wearing red bandanas and blue work clothes with sleeves rolled up, they set a world record for the largest gathering of "Rosie the Riveters" since World War II. Among those in costume were 43 of the "original Rosies," women who went to work in American factories producing munitions and war supplies critical to the Allied victory in the 1940s.