I had to ask the question: Why is this museum in New Orleans? It is because of historian Stephen Ambrose's New Orleans connections and interest in starting a museum and the Higgins boat factory in New Orleans that produced all the amphibious landing craft for D-Day. The museum now has 3 of 6 planned buildings open. The latest is the Boeing building filled with restored planes. The story of the B-17 "My Gal Sal" was worth the price of admission.
Another exhibit is totally devoted to D-Day. To be balanced, the museum talks about "Pacific D-Days" on each island that America invaded to take that island from the Japanese. That approach is a little odd, but there is plenty to be learned.
The Tom Hanks-narrated movie, "Beyond All Boundaries" is a well-produced and ambitious attempt to cover all of America's involvement in WWII in just 45 minutes. It feels shallow to anyone who knows much about the war, but if it helps introduce the war's history to another generation, I'm all for it.
Overall, you will need several hours to appreciate the museum as it stands in 2013. By 2016, it will double in size.
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