Modern silo operations are rarely conducted from within the silo itself. Instead, they are part of a networked system:
: A separate, manned surface residence that serves as the hub for a cluster of silos. Working Missile Silo Facility
: A massive sliding closure at the surface, often weighing between 110 and 700 tons. In a launch event, this door is opened rapidly, sometimes using explosive charges or compressed gas, to clear the way for the missile. Modern silo operations are rarely conducted from within
: A hardened underground capsule, often 60 to 100 feet deep, where a two-person "missileer" crew monitors a group of (usually ten) silos. this door is opened rapidly