Question: What platoon mate of Kevin Lacz served four tours in the Iraq War and was awarded several commendations for acts of heroism and meritorious service in combat?

Context paragraphs:
Meritorious Service Medal (Canada): The Meritorious Service Medal (French: "Médaille du service méritoire" ) is a decoration that is, within the Canadian system of honours, one of the two Meritorious Service Decorations gifted by the Canadian monarch, generally through his or her viceroy-in-Council.  Created in 1991, the medal is intended to recognize individuals—both Canadian and foreign—who have carried out meritorious acts bringing benefit and honour in either of two categories: military and civilian.  Award of the medal grants recipients the ability to use the post-nominal letters "MSM".

Jaimie Leonard: Jaimie E Leonard (died 8 June 2013) was a lieutenant colonel in the United States Army and a part of the Headquarters and Headquarters Company, 2nd Brigade Combat Team, 10th Mountain Division, Fort Drum, New York.  She was 39 years old when she died in Sharana, Afghanistan, as a result of a small arms-related injury.  Previously deployed in Bosnia (1999) and Iraq (2005), she was deployed in Afghanistan in 2011, where she acquired fatal injuries in the process of training Afghan soldiers in Paktika province.  In her career as a military intelligence officer, Leonard was honored with two Bronze Stars, two Meritorious Service Medals, the Joint Commendation Medal, three Army Commendation Medals, the Valorous Unit Award, the Meritorious Unit Commendation, the National Defense Service Medal, Armed Forces Expeditionary Medal, Afghanistan Campaign Medals, Iraq Campaign Medal, the Global War on Terrorism Expeditionary Medal, the Global War on Terrorism Service Medal, the Korean Defense Service Medal, the Army Service Ribbon, five Overseas Service Ribbons, the NATO Badge, Parachutist Badge, and the Army Staff Identification Badge.

Meritorious Service Decoration: The Meritorious Service Decorations (French: "Décorations pour service méritoire" ), available in two forms as the Meritorious Service Cross (Fr.: "Croix du service méritoire") and the Meritorious Service Medal (Fr.: "Médaille du service méritoire"), are Canadian decorations awarded to those who have demonstrated an outstanding level of service or set an exemplary standard of achievement to benefit or honour Canada.  The decoration, awarded to both Canadians and non-Canadians and available in both military and civilian divisions, is awarded by the reigning Canadian monarch (currently Queen Elizabeth II ) and presented on her behalf by the Governor General.

Commendation Medal: The Commendation Medal is a mid-level United States military decoration which is presented for sustained acts of heroism or meritorious service.  For valorous actions in direct contact with an enemy, but of a lesser degree than required for the award of the Bronze Star Medal, a Commendation Medal with "V" Device or Combat "V" (Navy/Marine Corps/Coast Guard) is awarded; the "V" device may be authorized for wear on the service and suspension ribbon of the medal to denote valor.  Each branch of the United States Armed Forces issues its own version of the Commendation Medal, with a fifth version existing for acts of joint military service performed under the Department of Defense.

Defense Meritorious Service Medal: The Defense Meritorious Service Medal (DMSM) is an award bestowed upon members of the United States military by the United States Department of Defense.  In the order of precedence of the United States Armed Forces, it is worn between the Purple Heart and the Meritorious Service Medal.  The medal is awarded in the name of the Secretary of Defense to members of the Armed Forces who, while serving in a joint activity, distinguish themselves by non-combat outstanding achievement or meritorious service, but not of a degree to warrant award of the Defense Superior Service Medal.

Meritorious Service Cross: The Meritorious Service Cross (French: "Croix du service méritoire" ) is a decoration that is, within the Canadian system of honours, one of the two Meritorious Service Decorations gifted by the Canadian monarch, his or her Governor-in-Council.  Created in 1984, the medal is intended to recognize individuals—both Canadian and foreign—who have carried out meritorious acts bringing benefit and honour in either of two categories: military and civilian.

Chris Kyle: Christopher Scott "Chris" Kyle (April 8, 1974 – February 2, 2013) was a United States Navy SEAL veteran and sniper.  Kyle served four tours in the Iraq War and was awarded several commendations for acts of heroism and meritorious service in combat.  He was awarded one Silver Star Medal, four Bronze Star Medals with "V" devices, a Navy and Marine Corps Achievement Medal and numerous other unit and personal awards.

Herta Huber: Herta Huber (January 1926, Schönbach (present-day Luby (Cheb District), Karlovy Vary Region, Czech Republic) is a German writer and poet.  She is known for writing in the Egerland dialect, originating from what is now part of Bohemia in the Czech Republic.  She was awarded several commendations of the Sudetendeutsche Landsmannschaft for her literary contributions.  She resides in Immenstadt.

American Sniper: American Sniper is a 2014 American biographical war drama film directed by Clint Eastwood and written by Jason Hall.  It is loosely based on the memoir "American Sniper: The Autobiography of the Most Lethal Sniper in U.S. Military History" (2012) by Chris Kyle, with Scott McEwen and Jim DeFelice.  The film follows the life of Kyle, who became the deadliest marksman in U.S. military history with 255 kills from four tours in the Iraq War, 160 of which were officially confirmed by the Department of Defense.  While Kyle was celebrated for his military successes, his tours of duty took a heavy toll on his personal and family life.  The film was produced by Eastwood, Robert Lorenz, Andrew Lazar, Bradley Cooper, and Peter Morgan.  It stars Cooper as Kyle and Sienna Miller as his wife Taya, with Luke Grimes, Jake McDorman, Cory Hardrict, Kevin Lacz, Navid Negahban, and Keir O'Donnell in supporting roles.

Kevin Lacz: Kevin “Dauber” Lacz is a United States Navy SEAL veteran who served two tours in the Iraq War with SEAL Team 3.  His platoon's 2006 deployment to Ramadi has been discussed in several books, including Dick Couch’s "The Sheriff of Ramadi", Jim DeFelice’s "Code Name: Johnny Walker", and Chris Kyle's New York Times best-selling autobiography, "American Sniper".  Lacz’s presence in the book led to his involvement in the production of and eventual casting in the Clint Eastwood-directed Oscar-winning biopic of the same name (starring Bradley Cooper).

Supporting paragraphs: Kevin Lacz Chris Kyle
Answer: Chris Kyle