One of the two defendants in a federal felony drug trafficking case has pleaded guilty in Federal Court in Texarkana. State Trooper Chuck Cannon arrested 60-year-old Manuel Hernandez and 34-year-old Myrna Guadaloupe Corrujeda last August in Mt Pleasant for allegedly being in possession of more than ten pounds of powdered cocaine. Hernandez pleaded guilty, and the attorney for Corrujeda said his client has reached a plea bargain. Both defendants are from Michigan and face between 10 years and life in prison and fines up to $10 million.