Neurotransmitters are chemical messengers that coordinate the transmission of signals from one nerve cell (neuron) to the next.eurotransmitters are chemical messengers that coordinate the transmission of signals from one nerve cell (neuron) to the next.
Soldiers in the secondary zone may be boarded with 16 months time-in-service and four months time-in-grade as of the first day of the board month. The time-in-service requirement for attaining eligibility for promotion to SSG is 84 months Active Federal Service for the primary zone and 48 months for the secondary zone.
To SSG secondary zone: SGT with minimum 48 TIS and 7 months TIG. c. To SGT primary zone: CPL/SPC with 36 months TIS and 8 months TIG. d. To SGT secondary zone: CPL/SPC with 18 months TIS and 6 months TIG. e. Soldiers must meet all eligibility criteria IAW MILPER Message 12-191, Table 3-3.