On May 4, Nine Muses reveal a group shot taken with Super Junior Leeteuk who is currently serving the army on their twitter account. They wrote that they've finished K-Force Special Show successfully and is currently gearing for comeback.
In the photo, Super Junior Leeteuk, the MC for the K-Force Special Show, was surrounded by the pretty girls from Nine Muses. He looks cool on his army uniform.
Source: 9muses_ twitter