Lee Greenwood says when he wrote “God Bless the U.S.A.” he didn’t realize the song’s staying power. In the past 15 years the country star’s signature hit has twice seen a resurgence in popularity. Lee attributes it to the song’s sentiment, which Americans are embracing in times of crisis.

Greenwood says “God Bless the U.S.A.” has always been special to him. He admits he gets emotional singing the song, especially for veterans. Lee explains that he was never in the military but considers “God Bless the U.S.A.” his “way of serving,” and how he gives back to those who have. The Country Music Hall of Fame is recognizing the 30th anniversary of “God Bless the U.S.A.” is with the exhibit “Lee Greenwood: American Patriot.” The display will remain up at the Nashville museum through April 25th.