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Glossary
| CAR | Canadian Aviation Regulations |
| CAT I | 1500 ft. Show Line Required |
| CAT II | 1000 ft. Show Line Required |
| CAT III | 500 ft. Show Line Required |
| CFR | Crash Fire Rescue |
| CGW | Certified Gross Weight |
| Comm | Communications |
| Control Point | A specific location where the event organizer, a designated representative, or an air boss manages the aviation event. The communications system with the capability necessary to control the aviation event must also be located at this site. |
| Corner Markers | An easily identifiable marker or landmark from the air, 500 feet or more right and left of primary spectator area along the crowd line from the primary spectator area to provide flybys and performers a 500-foot reference for proper separation from spectators. |
| Critical Aircraft or Critical Wingman | That aircraft closest to the primary spectator area in a formation flight. |
| Crowd Line | A physical barrier or a line marked on the ground that serves as a restraining line for designated spectator areas and provides the appropriate safety distances from the aerobatic box and/or show line. |