On the other hand, all the data from the flight data recorder, which used a solid-state drive, was recovered. Continuity of operations At the moment of impact, Secretary of Defense Donald Rumsfeld was in his office on the other side of the Pentagon, away from the crash site. He ran to the site and assisted the injured. Rumsfeld returned to his office, and went to a conference room in the Executive Support Center where he joined a secure videoteleconference with Vice President Dick Cheney and other officials. On the day of the attacks, DoD officials considered moving their command operations to Site R, a backup facility in Pennsylvania. Secretary of Defense Rumsfeld insisted he remain at the Pentagon, and sent Deputy Secretary Paul Wolfowitz to Site R. The National Military Command Center (NMCC) continued to operate at the Pentagon, even as smoke entered the facility. Engineers and building managers manipulated the ventilation and other building systems that still functioned to draw smoke out of the NMCC and bring in fresh air. During a press conference held inside the Pentagon at 18:42, Rumsfeld announced, "The Pentagon's functioning. It will be in business tomorrow." Pentagon employees returned the next day to offices in mostly unaffected areas of the building. By the end of September, more workers returned to the lightly damaged areas of the Pentagon. Aftermath Early estimates on rebuilding the damaged section of the Pentagon were that it would take three years to complete. However, the project moved forward at an accelerated pace and was completed by the first anniversary of the attack. The rebuilt section of the Pentagon includes a small indoor memorial and chapel at the point of impact. An outdoor memorial, commissioned by the Pentagon and designed by Julie Beckman and Keith Kaseman, was completed on schedule for its dedication on September 11, 2008. Since September 11, American Airlines continued to fly from Dulles International Airport to Los Angeles International Airport until 2020, when flights were permanently suspended. As of 2022, American Airlines operates the flight from Washington to LAX from Ronald Reagan Washington National Airport as Flight 1275 departing at 08:55 using an Airbus A321neo. Security camera video The Department of Defense released filmed footage on May 16, 2006, that was recorded by a security camera of American Airlines Flight77 crashing into the Pentagon, with a plane visible in one frame, as a "thin white blur" and