Great and informative visit with my husband and our 14 y/o son. The building was locked due to the furlough but other than needing the restroom, I don't know what we could have missed. The amazing planes and bombs and other equipment of massive size were all outside. The placards present along with mine and my husband's knowledge provided all of us, especially our son with a wealth of knowledge. Made a great "home" school lesson, or field trip.