Who gets reassigned when employees are excess to the needs of a Section? (Within an Installation)

Simply put, "...Full-time employees, excess to the needs of a section, starting with that employee who is junior in the same craft or occupational group and in the same level assigned in that section, shall be reassigned..."

Section 12.6 Basic Principles and Reassignments
When it is proposed to:

C4 Reassignment Within an Installation of Employees Excess
to the Needs of a Section

C4a The identification of assignments comprising for this purpose a section shall be determined locally by local negotiations. If no sections are established by local negotiations, the entire installation shall comprise the
section. * Example: In Huntsville, by Local Negotiation, a Section is considered the Tour

C4b Full-time employees, excess to the needs of a section, starting with that employee who is junior in the same craft or occupational group and in the same level assigned in that section, shall be reassigned outside the section but within the same craft or occupational group. They shall retain their seniority and may bid on any existing vacancies for which they are eligible to bid. If they do not bid, they may be assigned any vacant duty assignment for which there was no senior bidder in the same craft and installation. Their preference is to be considered if more than one such assignment is available.

See Contract for full language> Reference>:   http://www.local300npmhu.org/NPMHU%20National%20Agreement%20Nov.%2021,%202006%20-%20Nov.%2020,%202011.pdf