U.S. ambassador to France Jane Hartley presents U.S Airman First Class Spencer Stone, student Anthony Sadler and National Guardsman Alek Skarlatos (L to R) as they attend a ceremony at the U.S. Embassy in Paris, France, August 23, 2015. The three men helped overpower a Kalashnikov-toting attacker on a high speed Thalys train heading for Paris from Amsterdam on Friday. REUTERS/Regis Duvignau 

U.S. ambassador to France Jane Hartley (C) presents student Anthony Sadler, U.S Airman First Class Spencer Stone and National Guardsman Alek Skarlatos (L to R) as they attend a ceremony at the U.S. Embassy in Paris, France, August 23, 2015. The three men helped overpower a Kalashnikov-toting attacker on a high speed Thalys train heading for Paris from Amsterdam on Friday. REUTERS/Regis Duvignau 

U.S. ambassador to France Jane Hartley (C) presents student Anthony Sadler, U.S Airman First Class Spencer Stone and National Guardsman Alek Skarlatos (L to R) as they attend a ceremony at the U.S. Embassy in Paris, France, August 23, 2015. The three men helped overpower a Kalashnikov-toting attacker on a high speed Thalys train heading for Paris from Amsterdam on Friday. REUTERS/Regis Duvignau 

U.S. ambassador to France Jane Hartley presents U.S Airman First Class Spencer Stone, student Anthony Sadler and National Guardsman Alek Skarlatos (L to R) as they attend a ceremony at the U.S. Embassy in Paris, France, August 23, 2015. The three men helped overpower a Kalashnikov-toting attacker on a high speed Thalys train heading for Paris from Amsterdam on Friday. REUTERS/Regis Duvignau 

U.S. ambassador to France Jane Hartley presents U.S Airman First Class Spencer Stone, student Anthony Sadler and National Guardsman Alek Skarlatos (L to R) as they attend a ceremony at the U.S. Embassy in Paris, France, August 23, 2015. The three men helped overpower a Kalashnikov-toting attacker on a high speed Thalys train heading for Paris from Amsterdam on Friday. REUTERS/Regis Duvignau 

U.S. ambassador to France Jane Hartley (not pictured) presents U.S Airman First Class Spencer Stone, student Anthony Sadler and National Guardsman Alek Skarlatos (L to R) as they attend a ceremony at the U.S. Embassy in Paris, France, August 23, 2015. The three men helped overpower a Kalashnikov-toting attacker on a high speed Thalys train heading for Paris from Amsterdam on Friday. REUTERS/Regis Duvignau 

A combination photo shows U.S. Airman Spencer Stone (L), Anthony Sadler (C) and U.S. National Guardsman Alek Skarlatos (R) as Stone departs a clinic in Lesquin, France and as Sadler and Skarlatospose pose after were recognized for their bravery in Arras, France August 22, 2015 respectively. The three men helped overpower a Kalashnikov-toting suspected Islamist militant on a high speed train heading for Paris from Amsterdam. REUTERS/Files 

Torre La Mar (L) from Best Buy and Phil Spencer (R), Corporate Vice President, Microsoft Studios present Carlos Anthony with the first Xbox One console at a minute past midnight during the Xbox One fan celebration and launch party in Los Angeles, California November 22, 2013. REUTERS/Gus Ruelas (UNITED STATES - Tags: SCIENCE TECHNOLOGY ENTERTAINMENT BUSINESS) 

Kansas City Chiefs running back Jamaal Charles is brought down from behind by Dallas Cowboys defensive end Anthony Spencer after making a gain during the second half of the Chiefs' win in their NFL football game in Kansas City, Missouri September 15, 2013. REUTERS/Dave Kaup (UNITED STATES - Tags: SPORT FOOTBALL) 

New York Knicks' Carmelo Anthony (C) is fouled as he shoots by Philadelphia 76ers' Spencer Hawes (R) as Knicks' Tyson Chandler looks on (L) during the fourth quarter of their NBA basketball game in New York, February 24, 2013. REUTERS/Mike Segar (UNITED STATES - Tags: SPORT BASKETBALL) 

New York Knicks Carmelo Anthony (7) looks to shoot under pressure from the Philadelphia 76ers Spencer Hawes (00) and Damien Wilkins (C) during their NBA basketball game in Philadelphia, Pennsylvania, January 26, 2013. REUTERS/Tim Shaffer (UNITED STATES - Tags: SPORT BASKETBALL) 

Washington Redskins running back Alfred Morris (C) eludes Dallas Cowboys defenders Anthony Spencer (R) and Eric Frampton (L) while running a 32-yard touchdown in the second half of their NFL football game in Landover, Maryland December 30, 2012. The Redskins defeated the Cowboys to claim first place in the NFC East. REUTERS/Gary Cameron (UNITED STATES - Tags: SPORT FOOTBALL) 

New Orleans Saints quarterback Drew Brees (C) looks down field as offensive tackle Jermon Bushrod (2nd R) blocks Dallas Cowboys linebacker DeMarcus Ware (R) and linebacker Anthony Spencer rushes Brees in the first half of their NFL football game in Arlington, Texas December 23, 2012. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

New Orleans Saints wide receiver Marques Colston runs after the reception as Dallas Cowboys linebacker Anthony Spencer (C) and corner back Sterling Moore (R) pursue in the second half of their NFL football game in Arlington, Texas December 23, 2012. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Pittsburgh Steelers quarterback Ben Roethlisberger (2nd L) is sacked by Dallas Cowboys linebacker Anthony Spencer (back) and linebacker DeMarcus Ware (on ground), as center Maurkice Pouncey (L) blocks in the second half of their NFL football game in Arlington, Texas December 16, 2012. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Dallas Cowboys head coach Jason Garrett and linebacker Anthony Spencer (R) celebrate after beating the Pittsburgh Steelers in their NFL football game in Arlington, Texas December 16, 2012. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Pittsburgh Steelers quarterback Ben Roethlisberger passes as Dallas Cowboys linebacker Anthony Spencer rushes in the first half of their NFL football game in Arlington, Texas December 16, 2012. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Pittsburgh Steelers tight end Heath Miller (83) beats Dallas Cowboys linebacker Anthony Spencer (93) to the end zone for a touchdown in the first half of their NFL football game in Arlington, Texas December 16, 2012. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Cincinnati Bengals quarterback Andy Dalton (14) is sacked by Dallas Cowboys' Anthony Spencer (93) during the second half of play in their NFL football game at Paul Brown Stadium in Cincinnati, Ohio, December 9, 2012. REUTERS/John Sommers II (UNITED STATES - Tags: SPORT FOOTBALL) 

Philadelphia Eagles running back Bryce Brown (2nd L) runs past Dallas Cowboys linebacker Anthony Spencer (2nd R) as offensive tackle Dennis Kelly (R) blocks and quarterback Nick Foles watches the first half of their NFL football game in Arlington, Texas December 2, 2012. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Washington Redskins quarterback Robert Griffin III (C) tries to elude the pressure of Dallas Cowboys linebacker Anthony Spencer (L) and linebacker DeMarcus Ware in the first half of their NFL football game in Arlington, Texas November 22, 2012. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Montreal Alouettes' quarterback Anthony Calvillo autographs a poster for seven year old Landen Spencer following practice in Montreal, November 16, 2012. The Alouettes will play the Toronto Argonauts in the CFL Eastern final football game on Sunday. REUTERS/Christinne Muschi (CANADA - Tags: SPORT FOOTBALL) 

Philadelphia Eagles quarterback Nick Foles (9) throws a pass under pressure from Dallas Cowboys' Anthony Spencer (93) during the fourth quarter of their NFL football game in Philadelphia, Pennsylvania November 11, 2012. REUTERS/Tim Shaffer (UNITED STATES - Tags: SPORT FOOTBALL) 

Seattle Seahawks running back Marshawn Lynch (L) carries the football as he attempts to break free from Dallas Cowboys Anthony Spencer during the fourth quarter of their NFL football game in Seattle, Washington, September 16, 2012. REUTERS/Robert Sorbo (UNITED STATES - Tags: SPORT FOOTBALL) 

Saint Lucia's Prime Minister Kenny Anthony, Grenada's Prime Minister Tillman Joseph Thomas, Barbados' Prime Minister Freundel Stuart, Jamaica's Prime Minister Portia Simpson Miller, U.S. President Barack Obama, Trinidad and Tobago's Prime Minister Kamla Persad-Bissessar, Belize's Deputy Prime Minister Gaspar Vega, Guyana's President Donald Ramotar, Saint Vincent and Grenadines' Prime Minister Ralph Gonsalves, (front row, L-R), Haiti's Foreign Minister Laurent Lamothe, Dominica's Prime Minister Roosevelt Skerrit, Antigua and Barbuda's Prime Minister Winston Baldwin Spencer, Bahamas' Deputy Prime Minister Theodore Brent Symonette, Dominican Republic's President Leonel Fernandez, Saint Kitts and Nevis' Prime Minister Denzil Douglas and Suriname's President Desi Bouterse (back row, 2nd L-R) pose for a picture at the Summit of the Americas in Cartagena, Colombia April 15, 2012. REUTERS/Kevin Lamarque (COLOMBIA - Tags: POLITICS) 

Brazil's President Dilma Rousseff, Belize's Deputy Prime Minister Gaspar Vega, Bahamas' Deputy Prime Minister Theodore Brent Symonette, Antigua and Barbuda's Prime Minister Winston Baldwin Spencer, Argentina's President Cristina Fernandez de Kirchner, Barbados' Prime Minister Freundel Stuart, Bolivia's President Evo Morales, Canada's Prime Minister Stephen Harper (back row, L-R), Uruguay's President Jose Mujica, Suriname's President Desi Bouterse, Saint Vincent and the Grenadines's Prime Minister Ralph Gonsalves, Dominican Republic's President Leonel Fernandez, Saint Kitts and Nevis' Prime Minister Denzil Douglas, Saint Lucia's Prime Minister Kenny Anthony, Trinidad and Tobago's Prime Minister Kamla Persad-Bissessar, Venezuela's Foreign Minister Nicolas Maduro, (2nd row from back, L-R) Paraguay's President Fernando Lugo, Jamaica's Prime Minister Portia Simpson Miller, Haiti's Foreign Minister Laurent Lamothe, Honduras' President Porfirio Lobo, Mexico's President Felipe Calderon, Panama's President Ricardo Martinelli, (2nd row from front, L-R) Guyana's President Donald Ramotar, El Salvador's President Mauricio Funes, Dominica's Prime Minister Roosevelt Skerrit, Costa Rica's President Laura Chinchilla, Colombia's President Juan Manuel Santos, Chile's President Sebastian Pinera, U.S. President Barack Obama, Guatemala's President Otto Perez and Grenada's Prime Minister Tillman Joseph Thomas (front row, L-R) pose for a group photo at the Americas Summit in Cartagena April 15, 2012. REUTERS/Enrique Marcarian (COLOMBIA - Tags: POLITICS) 

Argentina's President Cristina Fernandez de Kirchner (C) gestures as (clockwise, top L) Antigua and Barbuda's Prime Minister Winston Baldwin Spencer, Barbados' Prime Minister Freundel Stuart (partially covered), Saint Lucia's Prime Minister Kenny Anthony, Hondura's President Porfirio Lobo, Haiti's Foreign Minister Laurent Lamothe and Saint Kitts and Nevis' Prime Minister Denzil Douglas stand together during a group photo at the Americas Summit in Cartagena, April 15, 2012. REUTERS/Enrique Marcarian (COLOMBIA - Tags: POLITICS) 

Colorado University's Spencer Dinwiddie (R) blocks a shot attempt by UNLV's Anthony Marshall during their men's NCAA basketball game in Albuquerque, New Mexico, March 15, 2012. REUTERS/Eric Draper (UNITED STATES - Tags: SPORT BASKETBALL) 

(front row, L-R) Jamaica's Prime Minister Portia Simpson Miller, Antigua and Bermuda's Prime Minister Baldwin Spencer, St. Lucia's Prime Minister Kenny Anthony, Chile's President Sebastian Pinera, Suriname's President Desi Bouterse, Caricom Secretary-General Irwin LaRocque, St. Kitts and Nevis Prime Minister Denzil Douglas, pose with other heads of state for the group photo at the summit of Caricom countries, in Paramaribo March 9, 2012. Pinera was a special guest to this summit. REUTERS/Ranu Abhelakh (SURINAME - Tags: POLITICS) 

New York Giants quarterback Eli Manning (10) looks to pass under pressure from Dallas Cowboys outside linebacker Anthony Spencer (93) during their NFL football game in East Rutherford, New Jersey January 1, 2012. REUTERS/Gary Hershorn (UNITED STATES - Tags: SPORT FOOTBALL) 

Philadelphia Eagles running back LeSean McCoy (C) carries the ball as Dallas Cowboys linebacker Anthony Spencer (L), defensive tackle Jay Ratliff (2nd L) and linebacker Bradie James (R) move in for the tackle in the first half of their NFL football game in Arlington, Texas December 24, 2011. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Tampa Bay Buccaneers quarterback Josh Freeman (5) throws down field under pressure from Dallas Cowboys outside linebacker Anthony Spencer (93) during their NFL football game in Tampa, Florida December 17, 2011. REUTERS/Pierre DuCharme(UNITED STATES - Tags: SPORT FOOTBALL) 

Dallas Cowboys outside linebacker Anthony Spencer (93) strips the football from Tampa Bay Buccaneers quarterback Josh Freeman (5) for a fumble that the Cowboys recovered during their NFL football game in Tampa, Florida December 17, 2011. REUTERS/Pierre DuCharme(UNITED STATES - Tags: SPORT FOOTBALL) 

New York Giants quarterback Eli Manning (L) is chased from the pocket by Dallas Cowboys linebacker Anthony Spencer (C) as tackle Kareem McKenzie blocks in the first half of their NFL football game in Arlington, Texas December 11, 2011. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Arizona Cardinals quarterback Kevin Kolb (L) breaks the tackle on Dallas Cowboys outside linebacker Anthony Spencer in the first quarter during an NFL game in Glendale, Arizona, December 4, 2011. The Cardinals defeated the Cowboys 19-13 in overtime. REUTERS/Rick Scuteri (UNITED STATES - Tags: SPORT FOOTBALL) 

Dallas Cowboys linebackers Anthony Spencer (R) and Victor Butler celebrate after a blocked field goal against the Seattle Seahawks in the second half of their NFL football game in Arlington, Texas November 6, 2011. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Seattle Seahawks running back Marshawn Lynch (C) runs over Dallas Cowboys safety Barry Church (L) as tight end Zach Miller (R) blocks and linebacker Anthony Spencer (back) watches first half of their NFL football game in Arlington, Texas November 6, 2011. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Philadelphia Eagles wide receiver Jeremy Maclin (18) scores a touchdown in front of the Dallas Cowboys Anthony Spencer (93) and DeMarcus Ware (94) during the first quarter of their NFL football game in Philadelphia, Pennsylvania October 30, 2011. REUTERS/Tim Shaffer (UNITED STATES - Tags: SPORT FOOTBALL) 

Dallas Cowboys' linebacker Anthony Spencer (L) tackles St. Louis Rams' running back Steven Jackson in the first half of their NFL football game in Arlington, Texas October 23, 2011. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

St. Louis Rams' running back Steven Jackson (L) carries the ball as running back Brit Miller (ground) blocks and Dallas Cowboys' linebacker Anthony Spencer pursues in the first half of their NFL football game in Arlington, Texas October 23, 2011. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Dallas Cowboys' linebacker Sean Lee (L) recovers Washington Redskins' quarterback Rex Grossman's (2nd R, bottom) fumble while teammate linebacker DeMarcus Ware (2nd L) and Redskins' tackle Jammal Brown (C) scramble for the ball in the second half of their NFL football game in Arlington, Texas September 26, 2011. Grossman is tackled by Cowboys linebacker Anthony Spencer (R). REUTERS/Tim Sharp (UNITED STATES - Tags: SPORT FOOTBALL) 

Dallas Cowboys linebacker Sean Lee runs towards the ball after Washington Redskins quarterback Rex Grossman (R) fumbled when he was hit by linebacker Anthony Spencer in the second half of their NFL football game in Arlington, Texas September 26, 2011. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Washington Redskins quarterback Rex Grossman (C) fumbles the ball as he is hit by Dallas Cowboys linebacker Anthony Spencer in the second half of their NFL football game in Arlington, Texas September 26, 2011. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Washington Redskins quarterback Rex Grossman (C) fumbles the ball as he is hit by Dallas Cowboys linebacker Anthony Spencer (2nd L) as linebacker Sean Lee (L) and wide receiver Santana Moss watch in the second half of their NFL football game in Arlington, Texas September 26, 2011. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Washington Redskins quarterback Rex Grossman (R) is chased out of bounds by Dallas Cowboys linebacker Anthony Spencer in the first half of their NFL football game in Arlington, Texas September 26, 2011. REUTERS/Tim Sharp (UNITED STATES - Tags: SPORT FOOTBALL) 

Louisiana State University running back Spencer Ware (3rd L) runs for a touchdown while tight end Deangelo Peterson (L, on ground) blocks and safety John Boyett (C, on ground) and linebacker Josh Kaddu (C) try to make the tackle as cornerback Anthony Gildon (2nd L), center T-Bob Hebert (C, back) and linebacker Boseko Lokombo (R) watch in the second half of their NCAA football game at Cowboys Stadium in Arlington, Texas September 3, 2011. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Earl Spencer, brother to the late Princess Diana, speaks with guests at Westminster Abbey before the wedding of Britain's Prince William and Kate Middleton, in central London April 29, 2011. (ROYAL WEDDING/VIP) REUTERS/Anthony Devlin/Pool (BRITAIN - Tags: ENTERTAINMENT SOCIETY ROYALS) 

San Francisco 49ers running back Anthony Dixon (24) walks off the field with teammates Nate Clements (22) and cornerback Shawntae Spencer (36) after losing to the San Diego Chargers following their NFL football game in San Diego, California December 16, 2010. REUTERS/Mike Blake (UNITED STATES - Tags: SPORT FOOTBALL) 

Philadelphia Eagles guard Todd Herremans (C) celebrates his touchdown reception as Dallas Cowboys safety Barry Church (L) and linebacker Anthony Spencer react in the first half of their NFL football game in Arlington, Texas December 12, 2010. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Philadelphia Eagles quarterback Michael Vick (R) is hit by Dallas Cowboys linebacker Anthony Spencer (L) in the first half of their NFL football game in Arlington, Texas December 12, 2010. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Philadelphia Eagles quarterback Michael Vick (R) is hit by Dallas Cowboys linebacker Anthony Spencer (L) in the first half of their NFL football game in Arlington, Texas December 12, 2010. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Philadelphia Eagles quarterback Michael Vick (C) is hit by Dallas Cowboys linebacker Anthony Spencer (L) as head coach Andy Reid watches in the first half of their NFL football game in Arlington, Texas December 12, 2010. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Chicago Bears quarterback Jay Cutler (R) tries to elude the tackle by Dallas Cowboys linebacker Anthony Spencer in the first half of their NFL football game at Cowboys Stadium in Arlington, Texas September 19, 2010. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Dallas Cowboys linebacker Anthony Spencer (L) grabs the facemask of Chicago Bears quarterback Jay Cutler (C) as he scrambles with the ball as center Olin Kreutz (R) watches in the first half of their NFL football game at Cowboys Stadium in Arlington, Texas September 19, 2010. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL) 

Dallas Cowboys linebacker Anthony Spencer yawns in the fourth quarter of their preseason NFL football game against the Miami Dolphins in Arlington, Texas, September 2, 2010. Spencer did not play in the team's final preseason game. REUTERS/Tim Sharp (UNITED STATES - Tags: SPORT FOOTBALL) 

(L-R) Art students Anthony Ulrich, Anthony Depaul and Spencer Ozaki make their way through the Electronic Entertainment Expo (E3) in Los Angeles, California June 15, 2010. The annual E3 trade show highlights the computer and video games industry and is presented by the Entertainment Software Association. REUTERS/Gus Ruelas (UNITED STATES - Tags: SOCIETY ENTERTAINMENT SCI TECH) 

Carlos Spencer of South Africa's Lions (R) passes the ball against New Zealand's Wellington Hurricanes during their Super 14 rugby match in Wellington February 27, 2010. REUTERS/Anthony Phelps (NEW ZEALAND - Tags: SPORT RUGBY) 

Carlos Spencer of South Africa's Lions is caught by New Zealand's Wellington Hurricanes during their Super 14 rugby match in Wellington February 27, 2010. REUTERS/Anthony Phelps (NEW ZEALAND - Tags: SPORT RUGBY) 

Washington Redskins quarterback Jason Campbell is sacked by Dallas Cowboys Anthony Spencer (93) and Igor Olshansky (R) during second quarter of their NFL football game in Landover, Maryland, December 27, 2009. REUTERS/Molly Riley (UNITED STATES - Tags: SPORT FOOTBALL) 

San Diego Chargers wide receiver Malcom Floyd (C) is flipped in the air as he is tackled after the reception by Dallas Cowboys linebacker Anthony Spencer (L) and linebacker Keith Brooking in the second half of their NFL football game in Arlington, Texas December 13, 2009. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT FOOTBALL IMAGES OF THE DAY)