Defined Contribution Plan

12 Months Ended

Dec. 31, 2011

Defined Contribution Plan

12.   Defined Contribution Plan

AMS has established a defined contribution retirement plan (the “Plan”). All full-time employees who have reached the age of 21 are eligible to contribute to the Plan. The Plan includes a discretionary employer match. Employees vest in Company contributions at a rate of 50% per year over two years. There were no Company contributions for the period ended December 31, 2011.