Question: Where did the committee tell the Wright brothers they should demonstrate the power of flight?
About the article "Wright Brothers flights of 1909", section "Abstract".

Candidate passages:
The first aircraft to demonstrate active control about all three axes was the Wright brothers' 1902 glider. 
The first aircraft to demonstrate active control about all three axes was the Wright brothers' 1902 glider. 
The most controversial clause in the agreement is Paragraph 2(d):"Neither the Smithsonian Institution or its successors nor any museum or other agency, bureau or facilities, administered for the United States of America by the Smithsonian Institution or its successors, shall publish or permit to be displayed a statement or label in connection with or in respect of any aircraft model or design of earlier date than the Wright Aeroplane of 1903, claiming In effect that such aircraft was capable of carrying a man under its own power in controlled flight.
"O'Dwyer and Randolph asserted this clause presents a strong incentive to keep the Smithsonian from officially recognizing any manned, powered, controlled airplane flight before that of the Wright brothers on 17 December 1903.
When read in the context of the entire agreement, it says that should the Smithsonian take the position that someone other than the Wright brothers made a controlled and powered flight before 1903, the Smithsonian should be prepared to forfeit "the Wright Flyer" as named in the agreement, "Wright Aeroplane of 1903". 
Philip Orin Parmelee (1887 - 1 June 1912) was an American aviation pioneer trained by the Wright brothers and credited with several early world aviation records and "firsts" in flight.
He turned a keen interest in small engines into employment with the Wright Company in its early years and was one of several young pilots hired by the Wright brothers to demonstrate and publicize the capabilities of their airplanes.
Because of his youth, blond good looks, and daring reputation, Paremelee had the nickname "Skyman" attributed to him.
Among the feats credited to Parmelee are the first commercial flight of an airplane, establishing a world cross-country speed record, holding the world flying endurance record, piloting the first aircraft to drop a bomb, conducting the first military reconnaissance flight and piloting the first aircraft involved in the world's first parachute jump.
Parmelee was killed in the crash of an airplane he was piloting at an exhibition in Yakima, Washington, when turbulence flipped the airplane upside down. 
Dean Mosher served five years (2002-2007) as Historian General of the United States where he received the Commander General's medal in 2006 for organizing and saving the records of the organization.
He lectures around the country on historical subjects, including the Wright Brothers, John Paul Jones, Oliver Hazard Perry, Admiral David Glasgow Farragut, Theodore Roosevelt, and D-Day.
He lives in his own hand-built castle in Fairhope with his wife Pagan Sheldon Mosher.
They have two children, Megrez and Cleveland.
Mosher’s most notable painting is "Wilbur Wright Greets Lady Liberty".
The painting depicts the only accurate portrayal of Wilbur Wright’s flight around the Statue of Liberty.
Amanda Wright-Lane, great grandniece of the Wright Brothers, and Dean Mosher donated the painting to the Smithsonian National Air and Space Museum in July and it went on permanent exhibit in the Early Flight gallery on August 1st, 2013.
Another noteworthy painting, "Close Action", resides at War of 1812 Museum in Plattsburgh, New York.