8. Oshkosh
Fortune 500 rank: 386
2009 revenue: $5.4 billion
2009 total shareholder return: 322.3%
This Wisconsin company secured multi-billion-dollar contracts to supply the U.S. military with cargo trucks for Afghanistan and Iraq. Now, Oshkosh faces military cutbacks by the Obama administration and the end of a key contract this summer.
Oshkosh's other businesses -- supplying fire trucks, ambulances and emergency vehicles to cash-strapped municipalities -- will be pressed to pick up the slack.
NEXT: 9. Health Management Associates
