Restoration crews at the National Museum of the U.S. Air Force moved two presidential aircraft into the museum’s new fourth building on April 9. The VC54C Sacred Cow, which was first used by President Franklin D. Roosevelt, and the VC137C Air Force One (SAM 26000), which was used by eight presidents – Kennedy, Johnson, Nixon, Ford, Carter, Reagan, George H.W. Bush and Clinton, will be on display in the Presidential Gallery when the building opens to the public on June 8.