Space shuttle oxidation-reduction reaction

Launching into space a vehicle such as the space shuttle that weighs millions of pounds requires unimaginable quantities of energy—all furnished by oxidation-reduction reactions. 

Oxidation-reduction reactions furnish the energy to launch the space shuttle. 

Oxidation-Reduction Reactions Launch the Space Shuttle ... 

The reaction between ammonium perchlorate and aluminum is discussed in the Chemistry in Focus segment Oxidation-Reduction Reactions Launch the Space Shuttle. The reaction is labeled as an oxidation-reduction reaction. Explain why this is an oxidation-reduction reaction and defend your answer. 

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