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.
Your dog can roll over? Well, ours can sniff out a kilo of C-4. Take the bomb-sniffing dog quiz, and see if your score gets you a treat or the rolled-up newspaper.
High-profile shootings often make people wonder if the victim or victims would still be alive if no guns had been available. But is that true? Are people more reckless simply because they have a gun?