Dauntless shelter equals grave

The construction of the shelter
Went the way it was planned
Steel-reinforced concrete
Proved to be the choice
Half-ton armored door
Double-latch locks
Air-filtration systems
Not a single window
Bury yourself
Shelves groan under
The weight of food supplies
Ready for the terror
Ready and armed
No use for a handgun
Against the enemy front
Offers no comfort
The roof is getting closer
Walls begin to shake
It has become reality
Buried in a global war
Sensors are moving
Lights blink like hell
No transmission
In the radio
Monitors go blank
Air pressure changes
When lights turns to red
Shelter equals grave