As reported earlier, the March 20th episode of SBS's "Heroes" saw the members holding special performances for the soldiers of the 20th Air Force Wing. However, for this special stage, "Heroes" also invited guests to give soldiers extra amounts of encouragement and fun. These guests were none other than popular girl groups,�SISTAR and SECRET! SISTAR members have claimed in the past that they receive a lot of love when they perform at army bases, and this statement proved to be true through this episode. They gave sexy and powerful performances of "How Dare You" and "Push Push" to loud roars and cheers. But SECRET also proved to be popular amongst the soldiers, as they gave fresh and cute performances of "Madonna" and "Shy Boy". The soldiers were seen cheerfully singing and dancing along. The whole motive for the performance was to cheer on the soldiers and lift their spirits, and inviting the two groups seems to have done the trick! Check out their performances below!