The National Rifle Association held its 146th annual NRA Meetings and Exhibits conference in Atlanta over the weekend (April 27–30), and they brought out their big gun, President Donald Trump, for a keynote speech on April 28.

Before President Trump took the stage, 74-year-old Lee Greenwood delighted the gun-owning advocates in attendance to a tweaked rendition of his anthem, “God Bless the USA.”

Lee subtly changed the words to “God bless the NRA” during one of the song’s choruses.

As for President Trump, he had some kind words for Lee after his performance: “Also, my friend—he’s become a friend, because there’s nobody that does it like Lee Greenwood. Wow. Lee’s anthem is the perfect description of the renewed spirit sweeping across our country. And it really is, indeed, sweeping across our country. So, Lee, I know I speak for everyone in this arena when I say, we are all very proud indeed to be an American. Thank you very much, Lee.”

You can check out Lee’s performance below, and take special note at the 2:41 mark for Lee’s lyrical switch-a-roo.