After a storied career spanning more than five decades, American Association of Community Colleges (AACC) President and CEO Walter G. Bumphus announced on Thursday that he will retire at the end of the year. “On behalf of the board of directors, I would like to thank Dr. Bumphus for his leadership at AACC,” said Sunita Cooke, superintendent/president of MiraCosta College (California) and current chair of the AACC board of directors, said in a release.