CIA Test: Find the Differences

You’re at the CIA’s secret training facilities at Camp Peary on the York River in southeastern Virginia. Of course you’ve been calling it by its colloquial name, the Farm, for months - ever since you joined the Agency and began the exciting and grueling process of becoming a clandestine officer. Depending on your future work, you’ll stay for weeks or months. Here’s one of your brain-training exercises, donated by a former spy.