Subordinate systems are manual or automated systems which perform unique
command control within the BFA (page 4-5, para 4b(1)).
Housekeeping functions are similar for all five BFA and are concerned with
providing for intra-BFA communications systems, security, and protection of
BFA resources (page 4-6, para 4b(2)).
Voice and data distribution radios.
Communications, particularly voice and data distribution radios, are important
elements of the ATCCS...to interconnect the components of the C2S2 architecture
(page 4-7, para 4c).