stadium - n. a very large usually roofless building that has a large open area surrounded by many rows of seats and that is used for sports events, concerts, etc.
apparatus - n. the organization or system used for doing or operating something
scale - n. the size or level of something especially in comparison to something else
strategic - adj. useful or important in achieving a plan or strategy
in tandem - n. two people, groups or things working or happening together or at the same time
surveillance - n. the act of carefully watching someone or something especially in order to prevent or detect a crime
Does the idea of robotic guards make you feel uneasy? Do you think it is a good way to reduce crime? Let us know. Post your thoughts in the comments section?