Final answer:
A Concurrent report should be submitted when personnel are absent from their permanent duty command for more than three months, outside of the circumstances of duty under instruction or when accountable only to the permanent commander. This reflects shifts in military administrative protocols to accommodate the evolving nature of service.
Step-by-step explanation:
The subject of the question is related to military personnel management and performance evaluation reporting, specifically within the context of ADDU (Additional Duty) or TEMADD (Temporary Additional Duty). When personnel are absent from their permanent duty command for more than three months, except for duty under instruction or duty where they remain accountable only to their permanent duty commander, a Concurrent report should be submitted. This is a military protocol designed to ensure the continuous evaluation of service members when they are assigned to a duty that temporarily takes them away from their primary command.
The practice reflects the increased operational tempo and commitments of the U.S. military, which can also be observed in the shift from the traditional "One weekend a month, two weeks a year" reserve duty expectation to potentially up to seven weeks per year, as mentioned by the Army's top general in July 2012. Such changes underscore the evolving nature of military service and the need for administrative policies to adapt accordingly.