“We were looking to really focus on what was special about the series, which to us was its frontier nature… Unlike the other Trek series, which were all about exploration, ‘Deep Space Nine’ was about just the opposite: about staying in one place, making a commitment, and finding a way to make it work, in the face of adversity. And alongside people that you might not necessarily have chosen to work and live with in an ideal situation. With that in mind, we knew our story needed to be focused on the station itself in some way. So, when the station is overrun by mysterious soldiers of fortune from across the galaxy, it creates a powder keg on DS9 with a very short fuse.”

Star Trek: Deep Space Nine