On August 9, 2015, ESPN reported that the New Orleans VooDoo and Las Vegas Outlaws had ceased operations, effective immediately, a claim which was subsequently validated on the AFL website. On September 1, 2015, the Spokane Shock officially left the AFL and joined the <answer>IFL</answer> under the new name Spokane Empire, becoming the fifth active AFL/af2 franchise to leave for the <answer>IFL</answer> since bankruptcy (Iowa Barnstormers, Tri-Cities Fever, Green Bay Blizzard and Arkansas Twisters—now the Texas Revolution—left previously).
What rival league did the Spokane Shock join?
IFL