So I was running the shield brothers strike earlier today and it was just me and one other random guy and we were at the part where you shoot the tank. Anyway, as we were doing that I was on the right side of the room and saw that the door to the right as you walk into that area was open. I've ran the strike enough to know that it isn't normally open. Like a dummy I only walked halfway in and stopped because it was just me and him. So I went back to the strike and it was closed. Was this a secret like the black spindle to where it's a certain time it's open? Please let me know something because I've never heard anyone mention it before.