Someone who waves a flag in races is typically called a "flagger" or "race marshal." Their role is to communicate important information to drivers, such as the start or end of the race and any hazards on the track. In motorsports, specific flags have different meanings, and flaggers are trained to use them effectively to ensure safety and proper race conduct.
It means someone in the ship got a spreading disease .
My heart races every time time I see someone unfurl the US flag.
Races in Western riding are called gymkhana. There is a large variety of races, but the most common are the barrel race, pole bending, and flag race.
I don't know about "should", but races are normally started with a sudden sound like a starter's pistol, or by a visual signal like a light or flag.
Blue white checkered flag is used in formula races when the winner crosses the line.
Green Flag has developed the Green Flag Rescue application to pinpoint one's exact location by GPS and to enable someone to call for help when his or her car breaks down.
An American Flag.
American flag
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Both a euglena's flagellum and a flag are used for waving or movement. The flagellum on a euglena helps it to swim and navigate through its environment, much like how a flag waves in the wind for communication or decoration.
a flag??
American flag