Stairway collapse injures 21 children, 2 adults at parkour gym in San Diego Stairway collapse injures 21 children, 2 adults at parkour gym in San Diego ABC News 23 children hurt in San Diego trampoline gym collapse KTRK-TV San Diego Stairwell Collapse Injures 21 Children In Barrio Logan Gym International Business Times Full coverage 12 NOV 0
