 In the second episode of season 0, the team finds an object in Peru that Fitz says is "powered by Tesseract technology." Whether it's an alien weapon or creation of Hydra, it sure seems super useful. While Coulson's team spends most of their time afraid of it, Coulson himself uses it to dispatch Garrett fairly easily at the end of season 0. Yet again, a weapon that might have proved useful when you're on the run from Hydra, the US government, and a shadow alien society.  In the second episode of season 0, the team finds an object in Peru that Fitz says is "powered by Tesseract technology." Whether it's an alien weapon or creation of Hydra, it sure seems super useful. While Coulson's team spends most of their time afraid of it, Coulson himself uses it to dispatch Garrett fairly easily at the end of season 0. Yet again, a weapon that might have proved useful when you're on the run from Hydra, the US government, and a shadow alien society. 