"Blitz, Part 2 of 4: Rush"
*Wally West and Linda Park gather the 'family' together and give them the good news that they are going to be parents. Their celebration is interrupted by a series of sonic booms which destroy a large Keystone building. The two Flashes race off to rescue those in the area and encounter a super-fast being called Zoom, who then races back to Flash's apartment and faces Linda. *Source: dcuguide.com