Sarah and Aiden observed three men walk in hurried steps toward the building. Each of them carried a box in their hands which was made out of wood with metal edges.
They moved swiftly while trying to conceal their presence. Considering that Eve informed them how those three men are not residents of the building, Sarah and Aiden were confident that these are the men they are waiting for.
Eve analyzed boxes: it's not a liquid. X-ray, heat signatures, as well as other scans available revealed… nothing. Eve confirmed that the three boxes are not empty. Based on the sounds which were picked up, Eve suggested that a large number of small moveable objects is inside each of the box.
"Robots?", Sarah mumbled. "But x-ray should pick them up."
Aiden shrugged. "Maybe they are made out of a material which can't be seen with an x-ray… or any other thing that Eve has."
Sarah agreed.