Some buildings in London, such as the one below, will host military missile stations to protect the city from airborne terror threats during the Olympic Games.
Residents of this tall building (Lexington Building Water Tower) received a letter from the Defence Ministry informing them of the missile placement on top of their roof for safety reasons.
The missiles will overlook the Olympic Park, the area where most of the events will take place.
Aside from rooftop missiles, over 13 thousand troops will guard the city on the ground.
This is the largest military mobilisation in the UK since World War Two.
I will go check my roof now.