Barry, Cisco, and Ralph work to save people from debris from the falling satellite in episode 4x23 "We Are the Flash".
Maggie and Alex keep watch during the unveiling ceremony for the Supergirl statue which Lena Luther is presenting in episode 3x01 "Girl of Steel". Citizens run in a panic as Reign's earthquake rips through the city in episode 3x22 "Make it Reign".
Source: Floriana Lima — Instagram
From episode 1x10 "Bridges".