Air Wisconsin US Airways Express Strike by Flight Attendants.
25 May Tentative agreement made which will be presented to union members for approval.
22 May 2012 Flight Attendants union voted unanimously for strike action if an agreement is not made with management (Associations of Flight Attendants Union- CAW-AFA)
 
Hubs 
Ronald Reagan Washington National Airport  Washington DC
and
Philadelphia International Airport.
Extensive network around the U.S and Canada. Employees several thousand workers. 
Air Wisconsin US Airways Express 
Strike by Flight Attendants.