article_snippet: At one point, they encounter another man with a backpack walking down a flight of stairs.
article_snippet: Deadly: The man in a backpack walking down a flight of stairs scuttles off as the two armed men prepare to carry out the terror attack .
article_snippet: The video also shows stills of the dead gunmen who were killed in a firefight with security forces, including a picture indicating at least one was wearing an explosive belt.
article_snippet: ISIS issued a statement and audio on jihadi websites applauding the two gunmen as 'knights' for the two gunmen 'blessed invasion of one of the dens of infidels and vice in Muslim Tunisia'.
article_snippet: Shattered: The walls and windows were peppered with bullet holes while unused grenades lay scattered among debris .