After waking up in a lab, strapped to a table, things happened way too quickly for Seth.  One moment, he was a test subject in some unknown experiment, and the next a woman had broken into the room and was freeing him and the others in the room.  Seth noticed that the others in the room, besides the one freeing them, were the ones that had also been with him on the bus to Vegas, not that he really knew who any of them were.
The woman gave Seth a pink crystal, telling Seth and the others that they could alter the matter around him, whatever that meant, and then ran out of the room, leaving Seth utterly bewildered.  And as if that weren't enough to think about, this was quickly followed up by four men with tasers ordering him and the other people back onto the tables so the scientists could continue their (probably illegal) experiments.  Thankfully, Seth wasn't the only one who was having none of this, and before he had time to react, two others had quickly taken out the guards, one even taking a taser to the shoulder and somehow electrocuting one of the guards with it.  Seth would wonder about that later.  As he and the others made their way out, Seth paused to take a taser from one of the downed guards.  Until he knew how to use these crystals, he would do well to be armed.