The 2005 Pepsi 400 was a NASCAR Nextel Cup Series event held on July 2, 2005, at Daytona International Speedway in Daytona Beach, Florida.
 Contested over 160 laps, Tony Stewart, driver of the No. 20 Joe Gibbs Racing Chevrolet, won the race from the pole position, and led the most laps.
 Former United States Secretary of Defense Donald Rumsfeld was the grand marshal.
The White House Office is an entity within the Executive Office of the President of the United States.
 The White House Office is headed by the White House Chief of Staff, who is also the head of the Executive Office of the President.
 The staff of the various offices are based in the West Wing and East Wing of the White House, the Eisenhower Executive Office Building, and the New Executive Office Building.
Rear Admiral Stephen W. Rochon is the former Director of the Executive Residence and White House Chief Usher.
 He was the first African-American White House Chief Usher.
 Admiral Rochon served his last day on active duty with the Coast Guard on March 9, 2007, and began his service at the White House on March 12.
 Admiral Rochon succeeded Gary J. Walters, who retired in January 2007 after 20 years as White House Chief Usher.
 He resigned as Chief Usher in 2011 to work in the United States Department of Homeland Security and was replaced as Chief Usher by Angella Reid on October 5, 2011.
The White House Chief of Staff is the head of the Executive Office of the President and the White House Office, and is generally responsible for overseeing the actions of the White House staff, managing the President's schedule, and deciding who is allowed to meet with the President.
James Addison "Jim" Baker III (born April 28, 1930) is an American attorney and political figure.
 He served as White House Chief of Staff and United States Secretary of the Treasury under President Ronald Reagan, and as U.S. Secretary of State and White House Chief of Staff under President George H. W. Bush.
Kirstjen M. Nielsen is a government official and national security expert who currently serves as Principal Deputy White House Chief of Staff to U.S. President Donald Trump since September 6, 2017.
 She informally performed the role of Deputy Chief of Staff since the time John F. Kelly became White House Chief of Staff on July 31, 2017.
 Nielsen had previously served as Kelly's Chief of Staff at the Department of Homeland Security.
 She is the founder and former President of Sunesis Consulting.
 Prior to serving in the Trump administration, she was a senior fellow and member of the Resilience Task Force of the Center for Cyber & Homeland Security think tank at the George Washington University and served on the Global Risks Report Advisory Board of the World Economic Forum.
 She holds degrees from the Georgetown School of Foreign Service and the University of Virginia Law School.
The White House Deputy Chief of Staff is officially the top aide to the White House Chief of Staff, who is the senior aide to the President of the United States.
 The Deputy Chief of Staff usually has an office in the West Wing and is responsible for ensuring the smooth running of the White House bureaucracy, as well as such other duties as the Chief of Staff assigns to him or her.
 In some administrations, there are multiple deputy chiefs with different duties.
Donald Henry "Don" Rumsfeld (born July 9, 1932) is an American retired politician and businessman.
 Rumsfeld served as the 13th Secretary of Defense from 1975 to 1977 under President Gerald Ford, and as the 21st Secretary of Defense from 2001 to 2006 under President George W. Bush.
 He is both the youngest and the second oldest person to have served as Secretary of Defense.
 Additionally, Rumsfeld was a three-term U.S. Congressman from Illinois (1963–1969), Director of the Office of Economic Opportunity (1969–1970), Counsellor to the President (1969–1973), the United States Permanent Representative to NATO (1973–1974), and White House Chief of Staff (1974–1975).
The Secretary to the President (sometimes dubbed the president's Private Secretary or Personal Secretary) was a former 19th and early 20th century White House position that carried out all the tasks now spread throughout the modern White House Office.
 The Secretary would act as a buffer between the President and the public, keeping the President's schedules and appointments, managing his correspondence, managing the staff, communicating to the press as well as being a close aide and advisor to the President in a manner that often required great skill and discretion.
 In terms of rank it is a precursor to the modern White House Chief of Staff.
Joel Kaplan was the White House Deputy Chief of Staff for Policy for U.S. President George W. Bush.
 The other Deputy Chief was Blake Gottesman, Deputy Chief of Staff for Operations.
 He took over policy planning from Karl Rove on April 19, 2006, as part of a staff shake-up by Josh Bolten, the White House Chief of Staff.

Question: The grand marshall of the 2005 Pepsi 400 was White House Chief of staff during what years?
Answer: 1974–1975