| A | B |
| pentagon | a five-sided object or geometric figure |
| hall | long passageways or corridors ina building |
| stories | the floors in a building |
| get lost | if you don't know where you are or where to go |
| guards | the people who protect something |
| communications center | a central place where people communicate by telephone, internet, radio, satellite, etc. |
| rings | circles |
| the Navy | military department that works on ships and submarines |
| U.S. Department of Defense | the military department for the American government |
| Arlington, Virginia | the place where the Pentagon is |
| The Pentagon | the headquarters of the U.S. Department of Defense |
| the Air Force | the military department that works in the air (airplanes, etc.) |
| the Army | the military department that works on the ground (in tanks, etc.) |
| the Coast Guard | the military department that protects the coasts of the United States |
| the Marines | the military department that works with the other military departments (special forces) |