Description:At around 4:30 p.m. near Tiscornia Park in Sacramento, park rangers started running with their weapons drawn.
My photographer Dan Helgeson followed them, recording video of the scene.
A man was spotted with what appeared to be a sword — waving it around as hundreds flocked to the beach along the Sacramento and American Rivers.
The man was detained and his friend, who was dressed in swim trunks with a flotation device, wasn’t happy.(1:30)