COBRA Algorithm Manual Page: 69 of 106
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Draft Deliberative Document - For Discussion Purposes Only - Do Not Release Under FOIA
(Static)) times twelve times amount that the Officer Families Receiving BAH was reduced (note that
once Officer Families Receiving BAH reaches zero, no further Officer BAH savings can be realized). If
Net Officers Realigning is greater than zero, then Officer Family Quarters Available is reduced by the
amount of the net Officers Realigned (note that Officer Families Quarters Available never drops below
zero). There is a Housing Allowance Cost if more Officers are added than will fit in the available
housing equivalent to the number of officers added above those that went into available housing times
Officer BAH times twelve. These calculations are then repeated for Enlisted Personnel Realignments.
Last, Housing Allowance Net Costs for that base in that year is equal to the sum of all Housing
Allowance Costs realized minus all Housing Allowance Savings realized, plus the Housing Allowance
Net Costs of the previous year (if the year is greater than one). If the total is greater than zero, then the
Housing Allowance Cost is equal to the Housing Allowance Net Cost, and the housing Allowance
Savings is zero; otherwise, the Housing Allowance Savings is equal to the Housing Allowance Net Cost
times negative one, and the Housing Allowance Cost is zero.
Beyond year values of Housing Allowance Costs, Savings, and Net Costs are equal to the
values in year six.
Off Fam Qtrs Avail = Officer Housing Vacant
Enl Fam Qtrs Avail = Enlisted Housing Vacant
Off Fam Off Base = (Total Off) * (% Off Accomp) * (1 - % Accompanied Mil Not Receive BAH)
Enl Fam Off Base = (Total Enl) * (% Enl Accomp) * (1 - % Accompanied Mil Not Receive BAH )
Tot Off Fam Qtrs = (Total Off * % Off Accomp * % Fam Not BAH) + (Off Hsg Vac)
Tot Enl Fam Qtrs = (Total Enl * % Enl Accomp * % Fam Not BAH) + (Enl Hsg Vac)
Net Off PIP = Officer Programmed Installation Population Change
Net Enl PIP = Enlisted Programmed Installation Population Change
Off Fam Qtrs Avail = Off Fam Qtrs Avail - (Tot Off Fam Qtrs * Perc FH Priv)
Enl Fam Qtrs Avail = Enl Fam Qtrs Avail - (Tot Enl Fam Qtrs * Perc FH Priv)
Net Off Elim = Officer Scenario Position Changes
Net Enl Elim = Enlisted Scenario Position Changes
Net Off Realign* = (All Off Realign In) - (All Off Realign Out)
Net Enl Realign* = (All Enl Realign In) - (All Enl Realign Out)
*[Only consider moves greater than 50 miles, or where BAH or %Families Live Off Base different for
gainer and loser]
If Net Off FSC < 0
Off Fam Off Base = Off Fam Off Base
- (-Net Off FSC) * (% Off Accomp) * (1-% Accomp no BAH)
If Net Off FSC > 0
Off Farn Qtrs Avail = Off Fam Qtrs Avail
- (Net Off FSC) * (% Off Accomp)
If Net Enl FSC < 0
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United States. Department of Defense. COBRA Algorithm Manual, text, August 30, 2005; (https://digital.library.unt.edu/ark:/67531/metadc23414/m1/69/: accessed April 26, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.