You people realize that no matter what someone would have gotten shot in that situation? You could have sent anyone else in first, and he would have been shot. You could have all gone in at once, and the person at the front of the group would have been shot. There is no way to blame anyone for delaying the adventure.
no wait left
They MOVE ON through the door on the left.

There is apparently no where to go but down, but two guards are overheard, planning in ambush.