Military base

there are a immensely large amount of things a UNSC base could look like but according to the upcoming game halo wars it may contain more than previously thought

Buildings within

there is a large amount of buildings within a typical UNSC base including: 1 maybe 2 vehicle construction buildings or warehouses, 2 missile silo's, 1 supply pad, 1 hanger for hornets and such, 1 airpad suited for pelicans, 1 control tower, some sort of factory and maybe a large warehouse

Dangers

UNSC bases like this one are prone to common attacks by the covenent and so need to be heavily defended