How to secure a building

[Sanjuro]

With apologies if this has already been posted...

How to secure a building:

Royal Navy: turn out the lights and lock the doors.

Army: put armed guards on the entrances.

Royal Marines: cover all the exits and make sure the threat is contained.

SAS: go room to room using flashbangs, demo charges and smoke as required, eliminating all hostiles.

Royal Air Force: take out a three year lease with an option to buy.