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Gevo Supplies U.S. Army With Fuel for the Black Hawk Helicopter

December 23, 2013

Gevo, Inc. announced that the U.S. Army has successfully flown the
Sikorsky UH-60 Black Hawk helicopter on a 50/50 blend of Gevo's ATJ-8
(Alcohol-to-Jet). ATJ is a renewable, drop in alternative fuel for JP8
that addresses the Army Energy Security Strategy and Plans mandate that
the Army certify 100% of its air platforms on alternative/renewable
fuels by 2016. This flight marks the first ever Army Aircraft to fly on
the isobutanol ATJ blend. Flight testing is being conducted at Aviation
Flight Test Directorate (AFTD) on Redstone Arsenal, AL and is
anticipated to be complete by March 2014. Certification programs like
this are part of the Department of Defense's long-term energy strategy,
as evidenced by the U.S. Navy's recent announcement of its "Farm to
Fleet" program through which it will begin to blend biofuels at 10% to
50% rates with conventional jet fuel (JP-5).