ATBO have released a dramatic, black and white set of concept photos for their 3rd mini album comeback. 

Dressed in sleek naval uniforms, the ATBO members exude a solemn aura, as if preparing for an offensive attack. 

Stay tuned for more of ATBO's comeback teasers throughout this week, leading up to the full release of their 3rd mini album 'The Beginning : Flight' on May 18 at 6 PM KST.