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1.
An acronym meaning Stryker Brigade Combat Team (US Army).

Also, the same acronym (which may have a different meaning than the above) that appeared at the end of the JeanBenet Ramsey ransom letter, which has been connected to suspect John Mark Karr in his classmates yearbooks almost 20 years earlier.
Give me money etc etc etc.

Signed,

John Mark Karr

S.B.C.T.
by matthew mcleodd August 18, 2006