Superman (2006-) #709

Mysterious Kryptonian structures begin appearing suddenly in Boulder, Colorado, during Superman's visit. But upon closer inspection, Superman discovers these building are really the work of the Fastest Man Alive! 'Grounded' part 9.

Written By:
J. Michael Straczynski, Chris Roberson
Eddy Barrows, Allan Goldman
J.P. Mayer, Julio Ferreira
Cover By:
John Cassaday, Santiago Arcas