Granddaughters Nancy Ellis LeBlond Sosa and Georgia Grace Koch read scripture during a funeral service for former President George H.W. Bush at St. Martin’s Episcopal Church Thursday, Dec. 6, 2018, in Houston. David J. Phillip/Pool via REUTERS 

Nancy Ellis LeBlond Sosa and Georgia Grace Koch read scripture during a funeral service for former President George H.W. Bush at St. Martin’s Episcopal Church Thursday, Dec. 6, 2018, in Houston. David J. Phillip/Pool via REUTERS 

Former President George H. W. Bush is comforted by his daughter Dorothy "Doro" Bush Koch during funeral services for former first lady Barbara Bush at St. Martin's Episcopal Church in Houston, Texas, U.S., April 21, 2018. David J. Phillips/Pool via Reuters 

Former U.S. President George H. W. Bush looks at the casket of his late wife, former first lady Barbara Bush with his daughter Dorothy "Doro" Bush Koch during the visitation at St. Martin's Episcopal Church in Houston, Texas, U.S. April 20, 2018. Mark Burns/Office of George H.W. Bush/Pool via REUTERS TPX IMAGES OF THE DAY 

Former U.S. President George H. W. Bush looks at the casket of his late wife, former first lady Barbara Bush with his daughter Dorothy "Doro" Bush Koch during the visitation at St. Martin's Episcopal Church in Houston, Texas, U.S. April 20, 2018. Mark Burns/Office of George H.W. Bush/Pool via REUTERS 

Former U.S. President George H. W. Bush looks at the casket of his late wife, former first lady Barbara Bush with his daughter Dorothy "Doro" Bush Koch during the visitation at St. Martin's Episcopal Church in Houston, Texas, U.S. April 20, 2018. Mark Burns/Office of George H.W. Bush/Pool via REUTERS 

Ulrike Trautwein, Superintendent Bishop of the Evangelische Kirche in Berlin, Archbishop of Berlin Heiner Koch, Imam Kadir Sanci, bishop Markus Droege and priest Martin Germer hold hands during a service in the Kaiser Wilhelm Gedaechtniskirche (Kaiser Wilhelm Memorial Church) for the victims of a truck that ploughed into a crowded Christmas market at Breitscheidplatz in Berlin, Germany, December 20, 2016. REUTERS/Michael Kappeler/Pool 

Swiss Alpine wrestlers Alexander Kaempf (bottom) and Martin Koch fight during the Federal Alpine Wrestling Festival (Eidgenoessisches Schwing- und Aelplerfest) in Burgdorf August 31, 2013. Swiss Alpine wrestling, called "Schwingen", is the oldest sport in Switzerland. REUTERS/Ruben Sprich (SWITZERLAND - Tags: SPORT WRESTLING) 

Swiss Alpine wrestlers Alexander Kaempf (L) and Martin Koch fight during the Federal Alpine Wrestling Festival (Eidgenoessisches Schwing- und Aelplerfest) in Burgdorf August 31, 2013. Swiss Alpine wrestling, called "Schwingen", is the oldest sport in Switzerland. REUTERS/Ruben Sprich (SWITZERLAND - Tags: SPORT WRESTLING) 

Swiss Alpine wrestler Christian Stucki (rear) reacts after winning the fourth round against Martin Koch during the Federal Alpine Wrestling Festival (Eidgenoessisches Schwing- und Aelplerfest) in Burgdorf August 31, 2013. Swiss Alpine wrestling, called "Schwingen", is the oldest sport in Switzerland. REUTERS/Ruben Sprich (SWITZERLAND - Tags: SPORT WRESTLING) 

Swiss Alpine wrestlers Christian Stucki (top) fights with Martin Koch during the Federal Alpine Wrestling Festival (Eidgenoessisches Schwing- und Aelplerfest) in Burgdorf August 31, 2013. Swiss Alpine wrestling, called "Schwingen", is the oldest sport in Switzerland. REUTERS/Ruben Sprich (SWITZERLAND - Tags: SPORT WRESTLING TPX IMAGES OF THE DAY) 

Singers Martin Koch, as Monostatos, and Gisela Stille, as Pamina, perform during a dress rehearsal for the opera "Die Zauberfloete" by Austrian musician Wolfgang Amadeus Mozart, on a giant floating stage at Lake Constance in Bregenz July 12, 2013. The opera, directed by British director David Pountney, will premiere on July 17 at the annual Bregenz festival. Picture taken July 12, 2013. REUTERS/ Dominic Ebenbichler (AUSTRIA - Tags: ENTERTAINMENT) 

Latvia's Martins Cipulis (C) fights for the puck with Austria's Thomas Koch (L) and Mario Altmann during their 2013 IIHF Ice Hockey World Championship preliminary round match at the Hartwall Arena in Helsinki May 7, 2013. REUTERS/Grigory Dukor (FINLAND - Tags: SPORT ICE HOCKEY)

A combination photo shows (top L, clockwise) third placed Austria team Wolfgang Loitzl, Stefan Kraft, Gregor Schlierenzauer and Martin Koch soaring through the air during the Ski Jumping World Cup team event in Planica March 23, 2013. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: SPORT SKIING) 

A combination picture shows third placed team Wolfgang Loitzl, Stefan Kraft, Martin Koch and Gregor Schlierenzauer of Austria skiing before jumping during the Ski Jumping World Cup team event in Planica March 23, 2013. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: SPORT SKIING) 

Martin Koch of Austria soars through the air during the Ski Jumping World Cup in Oberstdorf February 16, 2013. REUTERS/Michaela Rehle (GERMANY - Tags: SPORT SKIING) 

Austria's Martin Koch soars through the air during the qualification for the third jumping of the 61st four-hills ski jumping tournament in Innsbruck, January 3, 2013. REUTERS/Kai Pfaffenbach (AUSTRIA - Tags: SPORT SKIING) 

Austrian singers Martin Koch (L) as Snaut, Martin Winkler (R) as Sartorius and Dietrich Henschel (C) of Germany as Kris Kelvin perform on stage during a dress rehearsal of "Solaris", an opera based on the novel by Stanislaw Lem in Bregenz July 14, 2012. The opera, directed by directors Moshe Leiser from Antwerp and Patrice Caurier from France, will have its world premiere on July 18 at the annual Bregenz festival. REUTERS/Miro Kuzmanovic (AUSTRIA - Tags: ENTERTAINMENT) 

Robert Kranjec (C) of Slovenia, Martin Koch (L) of Austria and Simon Ammann of Switzerland pose with their trophies after the ski-flying competition at the FIS World Cup Ski Jumping title in Planica March 18, 2012. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: SPORT SKIING) 

Robert Kranjec (C) of Slovenia, Martin Koch (L) of Austria and Simon Ammann of Switzerland pose with their trophies after the ski-flying competition at the FIS World Cup Ski Jumping title in Planica March 18, 2012. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: SPORT SKIING) 

Martin Koch of Austria soars through the air during the ski jumping World Cup Flying Hill Individual event in Planica March 18, 2012. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: SPORT SKIING)

A combination of four pictures shows team Austria Thomas Morgenstern (top L), Andreas Kofler (top R), Gregor Schlierenzauer (bottom L) and Martin Koch (bottom R) during the ski jumping World Cup Flying Hill Team event in Planica March 17, 2012. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: SPORT SKIING)

Martin Koch of Austria soars through the air during the men's FIS World Cup ski jumping flying hill individual competition in Planica March 16, 2012. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: SPORT SKIING) 

Martin Koch of Austria gestures after the men's FIS World Cup ski jumping flying hill individual competition in Planica March 16, 2012. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: SPORT SKIING) 

First-placed Robert Kranjec (C) of Slovenia, second-placed Simon Ammann (L) of Switzerland and third-placed Martin Koch of Austria celebrate on the podium after the men's FIS World Cup ski jumping flying hill individual competition in Planica March 16, 2012. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: SPORT SKIING) 

First-placed Robert Kranjec (C) of Slovenia, second-placed Simon Ammann (L) of Switzerland and third-placed Martin Koch of Austria celebrate on the podium after the men's FIS World Cup ski jumping flying hill individual competition in Planica March 16, 2012. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: SPORT SKIING) 

Martin Koch of Austria soars through the air during the men's FIS World Cup ski jumping flying hill individual competition in Planica March 16, 2012. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: SPORT SKIING) 

Austria's Martin Koch soars through the air during the first round of the team competition of the Ski-Flying World Championships in Vikersund February 26, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

A combination picture shows Austria's Gregor Schlierenzauer (top R), Andreas Kofler (bottom R), Martin Koch (bottom L) and Thomas Morgenstern (top L) as they soar through the air during the first round of the team competition of the Ski-Flying World Championships in Vikersund February 26, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

A combination of pictures shows Austria's Thomas Morgenstern, Gregor Schlierenzauer, Andreas Kofler and Martin Koch (L-R) during the team event at the Ski-Flying World Championships in Vikersund February 26, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

(L-R) Austria's Gregor Schlierenzauer, Andreas Kofler, Martin Koch and Thomas Morgenstern react after winning the team competition of the Ski-Flying World Championships in Vikersund February 26, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch, Gregor Schlierenzauer, Andreas Kofler and Thomas Morgenstern (L-R) pose with their gold medals after the team event at the Ski-Flying World Championships in Vikersund February 26, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch, Gregor Schlierenzauer, Andreas Kofler and Thomas Morgenstern (LtoR) pose with their gold medal after the team event at the Ski-Flying World Championships in Vikersund February 26, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

First placed Austria's Martin Koch reacts after the second round of the team competition of the Ski-Flying World Championships in Vikersund February 26, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch, Gregor Schlierenzauer, Andreas Kofler and Thomas Morgenstern (L-R) pose with their gold medals after the team event at the Ski-Flying World Championships in Vikersund February 26, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch, Gregor Schlierenzauer, Andreas Kofler and Thomas Morgenstern (L-R) pose with their gold medal after their team event at the Ski-Flying World Championships in Vikersund February 26, 2012. REUTERS Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

First placed Austria's Martin Koch reacts after the second round of the team competition of the Ski-Flying World Championships in Vikersund February 26, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

First placed Austria's Martin Koch reacts after the second round of the team competition of the Ski-Flying World Championships in Vikersund February 26, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch soars through the air during the first round of the team competition of the Ski-Flying World Championships in Vikersund February 26, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch soars through the air during a trial jump for the Ski-Flying World Championships in Vikersund February 26, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch speeds down the track during the Ski-Flying World Championships in Vikersund February 25, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch soars through the air during the Ski-Flying World Championships in Vikersund February 25, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Gold medallist Slovenia's Robert Kranjec (C), silver medallist Norway's Rune Velta (L) and bronze medallist Austria's Martin Koch attend the flower ceremony after the Ski-Flying World Championships in Vikersund February 25, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Gold medallist Slovenia's Robert Kranjec, silver medallist Norway's Rune Velta and bronze medallist Austria's Martin Koch attend the medal ceremony after the Ski-Flying World Championships in Vikersund February 25, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

(L-R) Norway's Rune Velta, Slovenia's Robert Kranjec and Austria's Martin Koch display their medals after the Ski-Flying World Championships in Vikersund February 25, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch displays his bronze medal after placing third in the Ski-Flying World Championships in Vikersund February 25, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch displays his bronze medal after placing third in the Ski-Flying World Championships in Vikersund February 25, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch crashes during the second jump for the Ski-Flying World Championships in Vikersund February 25, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch lies in the finish area after crashing during the second jump for the Ski-Flying World Championships in Vikersund February 25, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch reacts on the podium after placing third in the Ski-Flying World Championships in Vikersund February 25, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch leaves the finish area after crashing during the second jump for the Ski-Flying World Championships in Vikersund February 25, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch celebrates on the podium after placing third in the Ski-Flying World Championships in Vikersund February 25, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch crashes during the second jump for the Ski-Flying World Championships in Vikersund February 25, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch reacts after crashing during the second jump for the Ski-Flying World Championships in Vikersund February 25, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch soars through the air during the first round of the Ski-Flying World Championships in Vikersund February 25, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch soars through the air during the first round of the Ski-Flying World Championships in Vikersund February 25, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch soars through the air during a training jump for the Ski-Flying World Championships in Vikersund February 23, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

Austria's Martin Koch soars through the air during a training jump for the Ski-Flying World Championships in Vikersund February 23, 2012. REUTERS/Leonhard Foeger (NORWAY - Tags: SPORT SKIING) 

A combination picture shows Jurij Tepes (clockwise from top L), Jure Sinkovec, Robert Kranjec and Peter Prevc of team Slovenia soaring through the air during the Team Ski Jumping World Cup in Oberstdorf February 19, 2012. Team Slovenia won the competition ahead of Team Austria with Thomas Morgenstern, Martin Koch, Andreas Kofler and Gregor Schlierenzauern and ahead of team Norway with Anders Fannemel, Rune Velta, Tom Hilde and Anders Bardal. REUTERS/Michaela Rehle (GERMANY - Tags: SPORT SKIING) 

Anders Bardal of team Norway soars through the air during the Team Ski Jumping World Cup in Oberstdorf February 19, 2012. Team Slovenia with Robert Kranjec, Jure Sinkovec, Peter Prevc and Jurij Tepes won the competition ahead of Team Austria with Thomas Morgenstern, Martin Koch, Andreas Kofler and Gregor Schlierenzauern and ahead of team Norway with Anders Fannemel, Rune Velta, Tom Hilde and Anders Bardal. REUTERS/Michaela Rehle (GERMANY - Tags: SPORT SKIING)