Parent or governing
department/agency/organization that manages, owns, and/or controls the
system. When this is a US Agency it should be formated in the format of
<GENC Trigraph Code>.<US Agency code>.<Optional Org Code> (e.g.
USA.DNI, USA.DNI.IAD)
Source: NIST SP800-37
Source: CNSSI-1254 appendix C All RMF Core Documents 24, NIST SP 800-37