The Prince George's County Fire Department says the Joker's Jinx ride stalled Thursday afternoon.
They say the riders were upright and no one appeared to be in distress.
The fire department posted video of their rescue efforts on Twitter.
Video Update from @SixFlagsDC pic.twitter.com/t1cbwLcidk
— Mark Brady (@PGFDPIO) April 13, 2017
PGFD video from scene at @SixFlagsDC High Angle Rescue. Everybody is doing good on board stalled car. Rescues starting. pic.twitter.com/aStBHoeMAf
— Mark Brady (@PGFDPIO) April 13, 2017