Vault Note: This exhibit is located in the Presidential Gallery on a controlled-access portion of Wright-Patterson Air Force Base. Click here for requirements to visit this gallery. During World War II, bomber aircrews, primarily B-17 and B-29, flying into Wright Field needed a secure place to store their top secret Norden bombsights. The bombardier would remove the Norden's sighthead and place it in this vault. When the aircraft was ready to depart, the sighthead would be removed from the vault and reinstalled in the aircraft. Click here to return to the Presidential Gallery. Find Out More Related Fact Sheets Boeing B-17G Flying Fortress Boeing B-29 Superfortress Norden M-9 Bombsight Note: The appearance of hyperlinks does not constitute endorsement by the National Museum of the USAF, the U.S. Air Force, or the Department of Defense, of the external website, or the information, products or services contained therein.