I was just messing around, jumping on and off everything I could when I started to wonder if there was any way to get onto the floor of the hanger. I spent aabout 20 mins and I found a way. Here is the link to a video of me showing you how to do it. It's pretty simple. You can also hide under the stairs and freak people out who are going to check there Dead Orbit. There are a few parts that will stop you, just do a dash slide to get through (You can see the two places it happens to me in the video as well.) Enjoy and have fun!