Story highlights Kyle became a legend in military circles after 160 confirmed kills

The Navy SEAL marksman developed a deadly reputation in Iraq, where he served

(CNN) Texas is setting aside Monday to honor Chris Kyle, the Navy SEAL marksman depicted in the film "American Sniper."

Kyle became a legend in military circles due to his 160 confirmed kills and developed a deadly reputation in Iraq, where he served several times. He's considered one of the most lethal snipers in U.S. history.

"I have declared February 2 to be Chris Kyle Day in Texas," Gov. Greg Abbott tweeted. "We honor our military heroes."

During his speech at a Texas veterans event Friday, the governor described Kyle as "a man who defended his brothers and sisters in arms on and off the battlefield."

A Marine veteran is alleged to have killed Kyle at a Texas gun range in 2013.