COBRA Algorithm Manual Page: 90 of 106
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Draft Deliberative Document - For Discussion Purposes Only - Do Not Release Under FOIA
Phasing for that year and all previous years (for example: Year 1 Shutdown Cumulative Time-Phasing
is equal to the Year 1 Shutdown Time-Phasing; but Year 3 Shutdown Cumulative Time-Phasing is equal
to the sum of Shutdown Time-Phasing for years 1 through 3).
Shut Down Half-Year Time -Phasing
Shult Down Half-Year Time Phasing for a year is equal to half of that year's Shut Down Time-
Phasing plus the sum of the Shut Down Time-Phasing for all previous years (for example: Year 1 Shut
Down Half Year Time-Phasing is equal to half of the Year 1 Shut Down Time-Phasing; but Year 3 Shut
Down Half Year Time-Phasing is equal to half of the Year 3 Shut Down Time-Phasing plus the sum of
Shut Down Time-Phasing for years 1 through 2).
Shut Down Time -Phasing
If Auto-Time Phase in Screen One - General Scenario is disabled, then Shut Down Time-
Phasing for a Base is equal to the values entered for Shutdown Schedule in Screen Five - Base
Information (Dynamic); otherwise, it is calculated as follows:
If Total Personnel Realignments/Fliminations for the base is zero, then Shut Down Time-Phasing
for each year up to the base's Scenario ,Last Year is one divided by the Scenario Last Year of the base
(for example: if the Scenario Last Year for the base is year 5, then Shut Down Time-Phasing for years
1 through 5 is 1/5, or 20.00%). If the base has no Scenario Last Year (no realignments or eliminations;
neither closing nor deactivating), then Shut Down Time-Phasing for all six years is 1/6, or 16.67%.
If Total Personnel Realignments/Eliminations for the base is greater than zero, then Shut Down
Time-Phasing for each year is equal to the Percentage of Personnel Moved Out/Eliminated for that
Starting Civilians is the Total Civilians on Base in Screen Four - Base Information (Static) plus
the sum of all Programmed Installation Popunlation Civilian Changes in Screen Six - Base Information
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United States. Department of Defense. COBRA Algorithm Manual, text, August 30, 2005; (https://digital.library.unt.edu/ark:/67531/metadc23414/m1/90/: accessed April 21, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.