In 1979, cspan was created as a Public Service by americas Cable Companies and is brought to you today by your local cable or satellite provider. Good evening, can everybody hear me okay . My name is elizabeth with smithsonian associates. It is my pleasure to welcome you to brothers at arms. Let me ask you to silence and turn off cell phones or other Electron Electronics you might have with you. We have bright lights in here because our friends at cspan are filming tonights program. I ask when we go to the q and a part of the event we make a line here in the front because of the filming from cspan. To our valued members who make tonight and each night possible, our thanks for a warm welcome. For those who might be joining for the first time an equally warm welcome and i encourage you to check out all of the programming offered by smithsonian associations. We are welcome to introduce Larrie Ferreiro who received his degree from imperil college in london and teaches history and engineeri