Sneak Peek more new footage, plus images from "The Flash" episode "Rogue Air", featuring 'Firestorm: The Nuclear Man', airing May 12, 2015 on The CW:
"As 'Wells' once again gets the upper hand on the 'S.T.A.R. Labs' team, 'Barry' realizes he needs to make a big move and reaches out to an old foe, 'Captain Cold', for help.
"'Joe' and 'Caitlin' warn Barry that Cold can't be trusted.
"True to form, Cold has his own agenda that involves the 'meta-humans' trapped in the containment cells.
"As things seem to be going from bad to worse, The Flash gets reinforcements from 'Arrow' and 'Firestorm'..."
Click the images to enlarge and Sneak Peek "The Flash: Rogue Air"...