On Friday, April 20, 2007, Manmin's "Serem Korean Traditional Music Team" and "Performing Cultural Arts Team" performed at the "Foreign Language Competition" at the National School, a division of the Pentagon (the headquarters of the U.S. Department of Defense). Darner Lansbury, a Preparatory Committee member of the Competition, observed, "I invited Manmin Joong-ang Church's performing arts teams after reviewing the footages of their previous performances on the church's website. I am grateful for their performance as it has uplifted the atmosphere at this year's competition." Officials at Osan American Middle & High Schools, after receiving abundant grace at this event, expressed intentions to invited Manmin's teams at future events.