Googlailin vähän sulkupalloilmatorjunnasta ja löytyipä jännää luettavaa.
http://www.eaglespeak.us/2008/03/sunday ... rrage.html
http://www.skylighters.org/barrageballoons/
http://books.google.com/books?id=--JOLF ... lt#PPA3,M1
http://www.8thwood.com/320th_barrage_balloon_battal.htm
Esim tämä sakki:
"The 320th Barrage Balloon Bn. was unique at Normandy for two reasons. First, it was the first barrage balloon unit in France and second, it was the first black unit in the segregated American Army to come ashore on D-Day."