Sergeant at Arms, the officer of an organization who preserves order during its meetings. A sergeant at arms functions mainly at formal gatherings, where he enforces rules of procedure; in a legislative body he also enforces executive commands. Both houses of the U.S. Congress have a sergeant at arms, as do both houses of the British Parliament.
Armor, a defensive covering, usually made of metal. It is worn by soldiers, sailors, or airmen to protect them against enemy weapons.
The four-engine Boeing B-17 Flying Fortress was almost certainly the best-loved bomber of World War II. Despite the plane's superiority, Congress didn't authorize its purchase in quantity until war was certain. Learn the story and specs of the B-17.