I've been practicing clearing my house in the event of a break-in situation. I've come upon a question. I'll try my best to illustrate my house layout. I live in a 2-story ranch style home. The entry level is the upstairs, and the basement is below the ground. I live in the basement, at the furthest-most point in the house. Clearing the basement from my room is no problem. There is only one point in or out. I open my bedroom door and have eye contact with that entry point. All threats will have to be directly in front of me. Here is where it gets tricky. The entry point is a stair case. Directly at the top of the stairs is outside door #1 (back door). But when you make it to the top of the stairs, you must turn 180 degrees to continue to the rest of the house (in other words, my back is exposed the whole time while ascending the stair case). How should one clear a staircase like this? From the bottom of the staircase it is very clear whether or not the door was breached or closed, or whether someone was standing there. Im more worried about what would be in the rest of the house. Should I ascend the stair case backwards? Also, the staircase has a solid banister. You cannot see on the other side of it until you are at the top. So, it may be possible for someone to be crouched down and me not know it until I was literally on top of them. Any suggestions from you tactical types would be greatly appreciated. The weapons I would be clearing with are either my Glock or my Mossberg 590.