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2. List of gridiron football rules - Wikipedia

   en.wikipedia.org/wiki/List_of_gridiron_football...

   A standard football game consists of four 15-minute quarters (12-minute quarters in high-school football and often shorter at lower levels, usually one minute per grade [e.g. 9-minute quarters for freshman games]), [6] with a 12-minute half-time intermission (30 minutes in the Super Bowl) after the second quarter in the NFL (college halftimes are 20 minutes; in high school the interval is 15 ...

3. Electric gate - Wikipedia

   en.wikipedia.org/wiki/Electric_gate

   To conform to these regulations the gate system must be checked with a calibrated force tester and the full results kept in a technical file for 7 years. If the gate is not tested it does not comply. Most gate kits can be fitted with safety equipment so that these limits are achieved and so cover that part of EN13241-1.

4. Perimeter fence - Wikipedia

   en.wikipedia.org/wiki/Perimeter_fence

   Demarcation of a perimeter, when the protection of assets, personnel or buildings is required, is normally affected by the building of a perimeter fence system. The level of protection offered varies according to the threat level to the perimeter. Different types of perimeter fencing include: Chain-link fencing; Metal railings; Palisade fencing

5. Every Halo Game, Ranked From Worst To Best - AOL

   www.aol.com/every-halo-game-ranked-worst...

   The original Halo is a master class in game design, from top to bottom. The gunplay is excellent, the story is mystifying and fascinating, and the soundtrack is one of the greatest ever put in a game.

6. News, Politics, Sports, Mail & Latest Headlines - AOL.com

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   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

7. Perimeter intrusion detection - Wikipedia

   en.wikipedia.org/wiki/Perimeter_intrusion_detection

   A fence-mounted perimeter intrusion detection system installed on a chain link fence. A perimeter intrusion detection system (PIDS) is a device or sensor that detects the presence of an intruder attempting to breach the physical perimeter of a property, building, or other secured area.