Question: What actor portrayed the vice-president and chief operating officer of Thoratec Corporation in the movie "United 93"?

Context paragraphs:
Ronald Logue: Ronald (Ron) E. Logue is the former Chairman of the Board of State Street Corporation (), formerly Chief Executive Officer as Jay Hooley assumed that title March 1, 2010 in addition to his role as President.  Logue was appointed Chairman and Chief Executive Officer in 2004.  Prior to that he held a number of leadership positions at State Street.  Logue joined the company in 1990 as Senior Vice President and head of the investment servicing for US mutual funds.  He was named Chief Operating Officer in 2000 and President in 2001.  As President and Chief Operating Officer, Logue was responsible for overseeing State Street's investment servicing, securities and investment research and trading activities, as well as information technology.  During his presidency, he led the highly successful integration of the Deutsche Bank's Global Securities Services business, acquired in January 2003.

Glen Post: Glen F. Post III (born October 4, 1952) is the chief executive officer and president of CenturyLink, an S&P 500 integrated communications service provider based out of Monroe, Louisiana.  He earned a bachelor's degree in accounting in 1974 at Louisiana Tech University and an MBA in 1976 at Louisiana Tech.  Post joined CenturyTel in 1976.  He was named vice president in 1982 and was promoted to senior vice president and treasurer in 1984.  He was appointed to the CenturyTel board of directors in 1985, and the following year he was promoted to senior vice president and chief financial officer.  In 1988 Post was named executive vice president and chief operating officer.  He became the president and chief operating officer of CenturyTel in 1990.  In 1992 Post was named vice chairman of the board, president, and chief executive officer.  In 2002 he was appointed chairman of the board and chief executive officer.  Since 2009 Post has served as chief executive officer and president of CenturyLink.  His honors include: Louisiana Tech College of Administration and Business Distinguished Alumni in 1991, Louisiana Tech University Tower Medallion Award in 1997 and DeGree Enterprises Lifetime Achievement Award in Business 2003.

William R. Klesse: William "Bill" R. Klesse is the former Chairman of the Board for Valero Energy Corporation.  He served as Chief Executive Officer from December 31, 2005 to April 30, 2014, and President from January 17, 2008 to December 31, 2012.  He previously held positions with Valero as Vice Chairman of the Board, Executive Vice President, and Chief Operating Officer.  Prior to that time, he was the Chief Operating Officer of Valero Energy Corp. from January 2003 to January 3, 2006.  Before these roles, he served as Executive Vice President-Refining and Commercial Operations, from Valero's acquisition of Ultramar Diamond Shamrock Corporation (UDS) in 2001.  Klesse has been employed with Valero and its predecessor companies for 40 years.

Anthony Masunga: Anthony Masunga is the newly appointed chief operating officer for Botswana Telecommunications Corporation, from the previous appointment of being a general manager and acting manager commercial.  The Francistown-born Anthony Masunga started working as a chief operating officer and chief executive officer in January 2017.

Jim Lentz: Jim Lentz is the chief executive officer for Toyota North America; president and chief operating officer of Toyota Motor North America, Inc. (TMA); and a senior managing officer of the parent company Toyota Motor Corporation (TMC) which is located in Japan.  In that role Lentz manages all of Toyota’s North American affiliate companies which include TMA, Toyota Motor Sales, U.S.A., Inc. (TMS), and Toyota Motor Engineering & Manufacturing, North America, Inc. (TEMA), which includes responsibilities for Toyota Motor Manufacturing Canada Inc. (TMMC), and oversight for Toyota Canada, Inc. (TCI).  Lentz also serves as the chairman of the North American Executive Committee.  This is composed of the top leaders from the affiliate companies.  Most recently Lentz was the president and chief executive officer of TMS and senior vice president of TMA and served in a global advisory capacity as the managing officer for TMC.  Before that he served as president and chief operating officer and executive vice president of TMS.  Lentz previously held several executive positions including Toyota division group vice president and general manager where he oversaw all sales, logistics and marketing activities for Toyota and Scion regional sales offices and distributors.  He also served as the group vice president of marketing for the Toyota division and vice president of Scion, and was responsible for the initial launch of a new line of vehicles.  Lentz spent several years in the field as vice president and general manager of the Los Angeles region and before that general manager of the San Francisco region.  Prior to his role as general manager Lentz was vice president of marketing services for CAT in Maryland.  He has also held several other TMS positions, including field training manager, sales administration manager and truck sales team member.  Lentz joined Toyota in 1982 as the merchandising manager for its Portland, Oregon region where he later became the distribution manager and field operations manager.  He serves as chairman on the board of directors of The Global Automakers and is also a member of the executive advisory board for Daniels College of Business at the University of Denver (DU), his alma mater.  He was named “Marketer of the Year” by Advertising Age in 2006, an Automotive News “All Star” in 2007 and honored at Industry Leader of the year.

Tom Burnett: Thomas Edward Burnett Jr. (May 29, 1963 – September 11, 2001) was the vice-president and chief operating officer of Thoratec Corporation, a medical devices company based in Pleasanton, California.  He resided in San Ramon, California.

Christian Clemenson: Christian Dayton Clemenson (born March 17, 1958) is an American film and television actor.  He is well known for his portrayal of Jerry "Hands" Espenson in the television series "Boston Legal", for which he was nominated for three Emmy Awards and winning the 2006 Emmy Award for Outstanding Guest Actor in a Drama Series.  He has appeared in a number of highly acclaimed films, including "Hannah and Her Sisters", "Broadcast News", "Apollo 13" and "The Big Lebowski", and portrayed Tom Burnett in Paul Greengrass' "United 93".  He most recently starred in "" as prosecutor William Hodgman.

Stu Shea: K. Stuart "Stu" Shea (born January 9, 1957) is an American business executive and leader and intelligence professional serving in a leadership capacity to public and private companies, as well as an advisor to government agencies, private equity investors, and academic institutions.  Shea is Chief Executive Officer of Peraton, a national security technology company.  He is the former President & Chief Operating Officer of Leidos, Chief Operating Officer of Science Applications International Corporation (SAIC), and founder and emeritus chairman of the United States Geospatial Intelligence Foundation.

Michael J. Lotz: Michael J. Lotz is President and Chief Operating Officer of Mesa Air Group, joining the Company in July 1998.  In January 1999, Mr. Lotz became Chief Operating Officer.  In August 1999, Mr. Lotz became the Company’s Chief Financial Officer and in January 2000 returned to the position of Chief Operating Officer.  On June 22, 2000, Mr. Lotz was appointed President of the Company.  Prior to joining the Company, Mr. Lotz served as Chief Operating Officer of Virgin Express, a position he held from October 1996 to June 1998.  Previously, Mr. Lotz was employed by Continental Airlines, most recently as Vice President of Airport Operations, Properties and Facilities at Continental Express. .

Hlaudi Motsoeneng: Hlaudi Motsoeneng served as the acting Chief operating officer of the South African Broadcasting Corporation (SABC) from 2011 to 2013.  Motsoeneng was removed from his position as Chief operating officer after it had been found that he lied about his qualifications.  After being removed as acting Chief operating officer it was announced that Motsoeneng would move back to his previous position as Group Executive Editor of Provinces and Corporate Affairs of the SABC.  In December 2016, the Western Cape High Court ruled that Motsoeneng’s appointment as Group Executive was illegal and that he was “not entitled to occupy any position at the SABC”.

Supporting paragraphs: Christian Clemenson Tom Burnett
Answer: Christian Dayton Clemenson