Answer the question at the end by quoting:

David Gaub McCullough (; born July 7, 1933) is an American author, narrator, historian, and lecturer. He is a two-time winner of the Pulitzer Prize and the National Book Award and a recipient of the Presidential Medal of Freedom, the United States' highest civilian award. Born and raised in Pittsburgh, McCullough earned a degree in English literature from Yale University.
After the success of The Johnstown Flood, two new publishers offered him contracts, one to write about the Great Chicago Fire and another about the San Francisco earthquake. Simon & Schuster, publisher of his first book, also offered McCullough a contract to write a second book. Trying not to become "Bad News McCullough", he decided to write about a subject showing "people were not always foolish and inept or irresponsible." He remembered the words of his Yale teacher: "[Thornton] Wilder said he got the idea for a book or a play when he wanted to learn about something. Then, he'd check to see if anybody had already done it, and if they hadn't, he'd do it." McCullough decided to write a history of the Brooklyn Bridge, which he had walked across many times.  To me history ought to be a source of pleasure. It isn't just part of our civic responsibility. To me it's an enlargement of the experience of being alive, just the way literature or art or music is.  - David McCullough  He also proposed, from a suggestion by his editor, a work about the Panama Canal; both were accepted by the publisher. Critics hailed The Great Bridge (1972) as "the definitive book on the event."  Five years later, The Path Between the Seas: The Creation of the Panama Canal was released, gaining McCullough widespread recognition. The book won the National Book Award in History, the Samuel Eliot Morison Award, the Francis Parkman Prize, and the Cornelius Ryan Award. Later in 1977, McCullough travelled to the White House to advise Jimmy Carter and the United States Senate on the Torrijos-Carter Treaties, which would give Panama control of the Canal. Carter later said that the treaties, which were agreed upon to hand over ownership of the Canal to Panama, would not have passed had it not been for the book.

What led to him gaining

After the success of The Johnstown Flood, two new publishers offered him contracts, one to write about the Great Chicago Fire and another about the San Francisco earthquake.

Some context: Hough was born in Orem, Utah, the youngest of five children in a Latter-day Saints (Mormon) family. Her parents are Marianne and Bruce Hough; her father was twice chairman of the Utah Republican Party. Her brother, Derek Hough, is also a professional dancer. She also has three older sisters: Sharee, Marabeth and Katherine.
On March 18, 2014, Hough and her brother Derek announced a summer tour of over 40 cities across the U.S. and Canada, called "Move Live on Tour", which would include dancing and singing from both of them, and the appearance of a group of dancers employed by the Houghs who earned their jobs through auditions. They embarked on the sold out tour on May 25, 2014 in Park City, Kansas and ended it in Los Angeles on July 26, 2014. Due to the success of ticket sales and several sold out venues before the tour had officially kicked off, several more shows were added to the tour schedule, which also sold out. For the tour choreography, the Hough siblings collaborated with Nappytabs.  Following the success of the 2014 tour and high demand, the Houghs announced the return of "Move Live on Tour" in the summer of 2015. Spanning from June 12, 2015 to August 8, 2015, the sold out tour visited over 40 cities throughout the U.S. and Canada, and visited larger venues than in the previous year. Tabitha and Napoleon D'umo "Nappytabs" returned as collaborating choreographers alongside the Hough siblings. Auditions were also held to recruit a new group of dancers to join the Houghs, although some back-up dancers from the previous year returned.  On July 9, 2016, the Houghs held a free fitness pop-up event called 'Move Interactive' in Los Angeles, which they announced would be the first of many. The event started off in Sherman Oaks with a workout session at Pulse Fitness Studios led by celebrity personal trainer and owner, Mark Harari. The participants then took part in a two-mile run along Ventura Blvd, before finishing off with a dance-fitness class at JustDance Los Angeles. According to Hough, the motivation behind the event was to "bring health, love, community and human interaction into our everyday lives." The following week, on July 14, the Hough's held a second free Move Interactive event in Fryman Canyon, LA, which included a hike and team building exercises.  On December 14, 2016, they announced, via social media, that they would be going on a new tour, MOVE BEYOND Live on Tour, in 2017.
Who did Hough perform with on the tour?
A: Hough and her brother Derek

IN: Comey was born in Yonkers, New York, where his parents, Joan Marie Comey (nee Herald) and J. Brien Comey, lived. His grandfather, William J. Comey, was an officer and later commissioner of the Yonkers Police Department. The family moved to Allendale, New Jersey, in the early 1970s. His father worked in corporate real estate and his mother was a computer consultant and homemaker.

In February 2015, Comey delivered a speech at Georgetown University in Washington, D.C., regarding the relationship between police and the African American community. He said that, "At many points in American history, law enforcement enforced the status quo - a status quo that was often brutally unfair to disfavored groups", mentioning as an example his own Irish ancestors, who he said had often been regarded as drunks and criminals by law enforcement in the early 20th century. He added: "The Irish had some tough times, but little compares to the experience on our soil of black Americans", going on to highlight current societal issues such as lack of opportunities for employment and education which can lead young black men to crime. Comey stated:  Police officers on patrol in our nation's cities often work in environments where a hugely disproportionate percentage of street crime is committed by young men of color. Something happens to people of good will working in that environment. After years of police work, officers often can't help be influenced by the cynicism they feel. A mental shortcut becomes almost irresistible.  In October 2015, Comey gave a speech raising concerns that body worn video results in less effective policing, contradicting the President's public position. Days later, President Obama met with Comey in the Oval Office to address the issue. In an October 23 speech at the University of Chicago Law School, Comey said:  I remember being asked why we were doing so much prosecuting in black neighborhoods and locking up so many black men. After all, Richmond was surrounded by areas with largely white populations. Surely there were drug dealers in the suburbs. My answer was simple: We are there in those neighborhoods because that's where people are dying. These are the guys we lock up because they are the predators choking off the life of a community. We did this work because we believed that all lives matter, especially the most vulnerable.

what was done regarding the video?

OUT:
Days later, President Obama met with Comey in the Oval Office to address the issue.