Thousands pledged to toast him and Littlefield on Monday night, and hundreds expressed condolences on Kyle's Facebook fan page.

"Chris, thank you for your service; not only to the country you loved, but also to your fellow warriors that needed a helping hand," one woman wrote. "Rest in peace brave hero, patriot and warrior. You are missed."

The Facebook page also included a tribute to Littlefield, who the page's administrator wrote "felt deeply about the values of family, compassion, friendship and loyalty, and was equally as passionate about his love of God and country."

"Chad, thank you for your love for your country, the dedication to your country and your love for life," a woman said. "God has brought another angel home."