Grants are awards that do not have to be repaid. The most common grant awarded to UA students is the Federal Pell Grant, a need based grant awarded usually only to undergraduate students who have not earned a bachelor's or a professional degree.
Per the U.S. Department of Education, ACG/SMART program funding ended at the end of academic year 2010-2011. For information about the funding expiration see http://www2.ed.gov/about/overview/budget/budget11/summary/edlite-section3d.html#smart