Shaun Tucker, a/k/a “Shawn Turner,” and “Mark Tyler,” age 49, and his wife, Joanne Tucker, a/k/a “Joanne Krcma,” “Jill Swanson,” and “Jocelyn Turner,” age 50, both of Keymar, Maryland, pleaded guilty today to charges in connection with defrauding the United States of over $30 million in connection with obtaining government contracts, stealing over $1.6 million in employee benefits and evading taxes.