
Taya Kyle, widow of author and former army sniper Chris Kyle, speaks during the leadership forum at the National Rifle Association's annual convention Friday, May 3, 2013 in Houston. (AP Photo/Steve Ueckert)

** FILE ** Chris Kyle, a former Navy SEAL who wrote the book “American Sniper,” poses in Midlothian, Texas, on Friday, April 6, 2012. He was killed at a Texas shooting range on Feb. 2. (AP Photo/The Fort Worth Star-Telegram, Paul Moseley)

** FILE ** Chris Kyle, a former Navy SEAL who wrote the book “American Sniper,” poses in Midlothian, Texas, on Friday, April 6, 2012. He was killed at a Texas shooting range on Feb. 2. (AP Photo/The Fort Worth Star-Telegram, Paul Moseley)

Supports of Chris Kyle in Midlothian, Texas, line up along the southbound lane of Interstate 35, Tuesday, Feb. 12, 2013, in Waco, Texas, for his final journey to Austin, where he will be buried at the Texas State Cemetery. Kyle and his friend Chad Littlefield were shot and killed Feb 2. at a North Texas gun range. (AP Photo/Waco Tribune Herald, Rod Aydelotte)

A hearse containing former Navy SEAL Chris Kyle's casket leads a motorcade leaving the Multi-Purpose Stadium in Midlothian, Texas, on Feb. 12, 2013 for the 200-mile journey to Austin, where Kyle will be buried at the Texas State Cemetery. Kyle and his friend Chad Littlefield were shot and killed Feb 2. at a North Texas gun range. (Associated Press/Star-Telegram)

Tracy and Lucinda Larimore, Henderson, N.V., friends of Chris Kyle, made the trip to attend the funeral in Arlington yesterday and to pay their respects as the procession passed on U.S. 287 in Midlothian, Texas, Tuesday, Feb. 12, 2013, for the 200-mile journey to Austin, where Kyle will be buried at the Texas State Cemetery. (AP Photo/Star-Telegram, Max Faulkner)

Members of Midlothian Fire Department pay their respects during a procession for Chris Kyle in Midlothian, Texas, Tuesday, Feb. 12, 2013, for the 200-mile journey to Austin, where Kyle will be buried at the Texas State Cemetery. Some 7,000 people attended a two-hour memorial service for Kyle at Cowboys Stadium in Arlington on Monday. Kyle and his friend Chad Littlefield were shot and killed Feb 2. at a North Texas gun range. (AP Photo/Star-Telegram, Max Faulkner)

Larry Key gives instructions to the Patriot Guard Riders before the procession for Chris Kyle at Multi-Purpose Stadium, in Midlothian,Texas, Tuesday, Feb. 12, 2013, for the 200-mile journey to Austin, where Kyle will be buried at the Texas State Cemetery. (AP Photo/Star-Telegram, Max Faulkner)

A hearse containing former Navy SEAL Chris Kyle's casket leads a motorcade leaving the Multi-Purpose Stadium in Midlothian, Texas, on Feb. 12, 2013 for the 200-mile journey to Austin, where Kyle will be buried at the Texas State Cemetery. Kyle and his friend Chad Littlefield were shot and killed Feb 2. at a North Texas gun range. (Associated Press/Star-Telegram)