Impossible

As the men cheer loudly, there's a brilliant flash and thunderclap. Temporarily blinded, they stumble back from the Humvee, pushed by a puff of hot air and smoke. As the smoke clears ... their leader is gone. Where he stood is nothing but the smoldering, melted hood of the Humvee.
***
She slowly turns 360 degrees, sweeping her hand across the horizon. "Josh, there isn't a soul in sight. No cars, airplanes or boats." She pauses. "Who do you think would be watching you?" Looking down the beach and watching the surf erase their footprints, he sighs and says softly, "Not who ... what."