Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Hydra Technologies Ehecatl - The S4 Ehecatl is an unmanned aerial vehicle developed and manufactured by Hydra Technologies of Mexico which except for its infrared thermal sensor system is the first of its type to be completely designed and manufactured in Mexico.Named after Ehecatl the Aztec god of the wind it aims to provide safety for human lives in hazardous zones.
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