5. Roll Call/The Economist: Bomb Dogs (11/12)
UNITED STATES - JULY 19: U.S. Capitol Police K9 Technician Andrew Maybo investigates a truck entering the Capitol grounds with his explosive detector dog Vandy. The officers spend their day at a variety of posts or mobile shifts, and do sweeps throughout the area everyday. The K9 unit has been expanding its scope for Congressional security in recent years, and also working with other police agencies.
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