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.
Promotion eligibility (Time in Grade) (AC and USAR only). Soldiers competing for consideration to SFC and MSG must have a minimum of 36 months time in grade (TIG) for secondary zone consideration (as of the board convene date) effective with FY12 selection boards (convene date of October 1, 2011) or later.