Sound and Fury (Train scanning objects)

A train arrives at a grey town, and people approach it with boxes of scrap items and machine parts. When the train stops, the video cuts to a pan of the people as through filmed from the train, with an orange overlay. In the upper right corner we see the word SEARCH with a symbol in orange. Each person on the platform holds a box with the same symbol on it, and as the sensor pans over the boxes an orange rectangle marks each box and the symbols light up orange in the sensor image. Once identified, large robotic arms reach out from the train to take the boxes. In return the train tosses out some tubes with unknown content that they all want. An unknown character stops the train after it has left the station, and blasts it with firepower making the train explode. The mysterious tubes are spread around, and we see people catching them as they fall to the ground. Maybe they contain food?