Capitals anthem singer Caleb Green may be used to singing the Star Spangled Banner in an icy rink in front of thousands of hockey fans, but on Sunday afternoon Green and his group Voices of Service were singing on a football field, where the group was invited to perform during the halftime show between the Kansas City Chiefs and the Baltimore Ravens.

Earlier this summer, Voices of Service captured the hearts of the nation on the television show America’s Got Talent. The quartet, who are veterans and active-duty service members, shined through the competition and progressed into the finale, where the group performed with Billy Ray Cyrus. Voices of Service finished in the top five of the competition and helped spread their message of using music to heal and bring hope to veterans struggling with post-traumatic stress disorder and other mental health challenges.

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Hey @russianmachine I'm At The Chiefs Vs. Ravens Game And Guess Who Performed At Halftime? pic.twitter.com/pbxcA2GLvs

— Elvis Isaac (@ElvIsaac) September 22, 2019

Twitter user @ElvIsaac captured footage of Voices of Service performing NEEDTOBREATHE’s Brother at half time.

Leading up to their big gig, the group tweeted from the airport.

Hey @Chiefs fans we are on our way! See you tomorrow #Halftime @VoicesofService @CAMMO_Music pic.twitter.com/a7iz1cbCGx

— Voices Of Service (@VoicesofService) September 21, 2019

They also posed in ponchos during soundcheck while there was a downpour in Kansas City.

What's with this weather? #Voicesofservice soundcheck pic.twitter.com/ioFe3BJj4w

— Voices Of Service (@VoicesofService) September 22, 2019

The group took a photo from the top of Arrowhead Stadium.

And thanked the Chiefs on Twitter at the end of their performance.

Thank you @Chiefs! pic.twitter.com/MYxOLFaDRr

— Voices Of Service (@VoicesofService) September 22, 2019