Question: What did one member of the third set of co-anchors for "American Morning'" specialize in? 

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Roy Taylor (tennis): Roy Taylor (1883–1934) was an Australian tennis player and also represented Australia at lacrosse.  He was a stockbroker by profession.  He won the South Australian State singles championship in 1912, 1913 and 1919.  Taylor made his debut at the Australasian Championships in 1910 (losing in round one to Harry Parker).  In the 1913 semi finals, the big serving Taylor led Harry Parker 5-1 in the third set (sets were 1-1) when he sprained his ankle.  Although Taylor managed the cling on to take the third set, he lost the next two easily.  In 1914 Taylor lost in the quarter finals to Rupert Wertheim.  In 1919 Taylor led Gerald Patterson two sets to 0 in round two before having to retire.  In 1920 Taylor lost in the semis to Pat O'Hara Wood.  Taylor died suddenly while sitting at home with his family in 1934 aged 51.

George Holland (tennis): George Holland (1918–unknown) was an Australian tennis player.  In 1938, tennis legend Don Budge said that, among the younger and less prominent players he had seen on his trip to Australia, Holland had the brightest future.  "I have selected him after careful study of most of the leading young players.  I watched many of them in match play during the Australian championships when they did not know I was about" said Budge, in an article in The Sydney Morning Herald on 14th February 1938.  Budge went on to describe Holland's game by saying "he has a forceful service, hits his ground strokes with freedom and likes to chase them to the net, where he volleys and smashes severely, with just a dash of drop-volleys thrown in occasionally.  And he possesses a splendid temperament.  I summed him up as a clear-thinking lad with a heart as big as his happy outlook on life".  George Holland made his debut in the Australian championships in 1937 and lost to Arthur Huxley in round one.  At the 1938 Australian championships, 19 year old Holland beat Huxley 10-8 in the fifth set in round one.  Then in round two Holland caused a big upset by beating reigning French champion and third ranked player in the world Henner Henkel after losing the first 2 sets.  From the third set onwards, Holland "followed everything to the net and made some glorious volleys" and was in command of the match.  "His groundstrokes had more penetration, he rarely missed his first serve, and he treated Henkel's cannon-balls in cavalier fashion to take command of the attack" according to The Argus.  In the quarter finals, Holland lost in four sets to Adrian Quist.  In the first round of the 1939 Australian championships, Holland lost in round one to Vivian McGrath in straight sets.  During World War 2, Holland reached the rank of Lieutenant.  After the war, Holland resumed his tennis career.

Good Morning America: Good Morning America (GMA) is an American morning television show that is broadcast on ABC.  It debuted on November 3, 1975, and first expanded to weekends with the debut of a Sunday edition on January 3, 1993.  The Sunday edition was canceled in 1999; weekend editions returned on both Saturdays and Sundays on September 4, 2004.  The weekday program airs from 7:00 to 9:00 a.m. in all U.S. time zones (live in the Eastern Time Zone and on tape delay elsewhere across the country).  The Saturday and Sunday editions are one hour long and are transmitted to ABC's stations live at 7:00 a.m. Eastern Time, although stations in some markets air them at different times.  Viewers in the Pacific Time Zone receive an updated feed with a specialized opening and updated live reports.  A third hour of the weekday broadcast aired from 2007 to 2008, exclusively on ABC News Now.

Pin and hanger assembly: A pin and hanger assembly is used to connect two plate girders of a bridge.  These assemblies are used to provide an expansion joint in the bridge.  One beam (the "anchor span") is set on a pier with a short section cantilevered out toward the next pier.  The other (the "suspended span") begins underneath the anchor span, and has its far end resting on the next pier.  The beams have holes directly above each other.  The two holes are connected using "hangers", a pair of connecting plates sandwiching the bridge girders.  A pair of large steel pins through the plates and girder webbing provide the hinges, holding up the suspended span while allowing it to move longitudinally.  Large washers are bolted to each end of the pin to retain the hangers.  Exceptionally long spans may have two sets of girders cantilevered from opposite bridge piers with a third set of girders suspended by pin and hanger assemblies from both cantilevers.

2011 US Open – Day-by-day summaries: Top American Mardy Fish opened proceedings cruising past German Tobias Kamke 6–2, 6–2, 6–1.  While, another American Ryan Harrison fell to 27th seed Marin Čilić 6–2, 7–5, 7–6, after wasting leads in the second and third set.  No. 13 seed Richard Gasquet then played the inaugural match at the newest show court, Court 17, defeating Sergiy Stakhovsky in straight sets 6–4, 6–4, 6–0.  Five-time champion and 3rd seed Roger Federer defeated Santiago Giraldo 6–4, 6–3, 6–2.  Other seeds who cruised through were Gaël Monfils, Tomáš Berdych, Alexandr Dolgopolov, Radek Štěpánek and Janko Tipsarević.  While 15th seed Viktor Troicki and 29th seed Michaël Llodra, were both pushed to a final set with Llodra prevailing over Victor Hănescu, while Troicki was the first upset of the tournament losing to Alejandro Falla.

First Take (TV series): First Take is an American morning sports talk program on ESPN.  One episode airs each weekday from Monday through Friday, with the live episode airing from 10am ET until noon, with reruns from 1:00-3:00 PM ET on ESPN2 and from 4:00-6:00PM ET on ESPNews

The Morning Exchange: The Morning Exchange was an American morning television program that aired on WEWS-TV (channel 5) in Cleveland, Ohio from 1972 to 1999.  The program is widely regarded as one of the most successful local programs in the history of U.S. television.  On a typical day in the 1970s, over two-thirds of all television sets in the Cleveland market were tuned to "The Morning Exchange".  In 1975, ABC (of which WEWS is an affiliate) recognized the show's success and decided to adapt "MX" for a national audience – creating "Good Morning America".

American Morning: American Morning is an American morning news television show that aired on CNN.  It ran from 2001 to 2011.  "American Morning" debuted on the day after 9/11, five months earlier than planned, replacing "CNN Early Edition".  It was anchored by Paula Zahn and Anderson Cooper at its inception.  Cooper was replaced by Bill Hemmer in February 2002.  The show's next permanent co-anchors were Soledad O'Brien and Miles O'Brien, who fronted the show from 2003 to 2007.  They were replaced by John Roberts and Kiran Chetry due to poor ratings.  After Roberts and Chetry left in 2011, the show did not have a permanent anchor team and was shelved by CNN at the end of the year.  "American Morning" was replaced by two new programs, "Early Start" and "Starting Point".

Panama Canal expansion project: The Panama Canal expansion project, also called the Third Set of Locks Project, doubled the capacity of the Panama Canal by adding a new lane of traffic allowing for a larger number of ships, and increasing the width and depth of the lanes and locks allowing larger ships to pass.  The new larger size of ships, called New Panamax, are about one and a half times the previous Panamax size and can carry over twice as much cargo.  The expanded canal began commercial operation on 26 June 2016.

Miles O'Brien (journalist): Miles O'Brien (born June 9, 1959) is an independent American broadcast news journalist specializing in science, technology, and aerospace.

Supporting paragraphs: American Morning Miles O'Brien (journalist)
Answer: science, technology, and aerospace.