Danton Black meets with Java in an alley in episode 1x02 "Fastest Man Alive".
Wally heads to an industrial area to throw the last piece of the Philosopher's Stone into the speed force and Barry arrives too late to stop him in episode 3x15 "The Wrath of Savitar".
Izzy Bowin calls out DeVoe in an attempt to stop him herself and the team rushes to rescue her in episode 4x14 "Subject 9".
Ralph and Sherloque follow the mask lead to a chemical plant but learn that hundreds of workers across several facilities use the same masks in episode 5x04 "News Flash".
Oliver chases a Vertigo dealer in order to identify his supplier in episode 1x12 "Vertigo".
Laurel and Roy attempt to ambush Brick but end up getting one of the aldermen killed in episode 3x11 "Midnight City".
A woman under attack in an alley is saved my Laurel as Black Canary who is in turn saved by Roy as Arsenal in episode 3x11 "Midnight City".
Oliver and Tatsu go to the port to save Maseo and Akio in episode 3x07 "Draw Back Your Bow".
The team sets up an ambush for the corrupt cops in episode 4x04 "Beyond Redemption".
The team heads into the building from the GPS and locate the hideout of the corrupt police officers in episode 4x04 "Beyond Redemption".
Oliver rides his parachute down after falling from Church's helicopter in episode 5x01 "Legacy".
Kara goes to save someone from a fire only to learn he put himself in danger just to be saved in episode 3x04 "The Faithful".
James and Winn accompany Kara to the meeting listed on the strange pamphlet and find themselves in a Cult of Supergirl meeting in episode 3x04 "The Faithful".
Lena brings James to a meeting with a contact but they are attacked by a guy with a laser gun in episode 3x09 "Reign".
Reign interrupts a gang deal on the docks killing all of the gang members involved in episode 3x09 "Reign".